There's been a few changes in my own Metabo tool lineup (& impressions) since I last posted to this thread a decade or so ago.
I still have Metabo's grinders. 9" x 2, 6" x one, 5" x 5. Of these one 9" & one 5" are cordless. The big 'un is superb; just as powerful but slightly deeper cutting than my corded version & surprisingly better-balanced too considering (or as I suspect because) it uses two big 8.0 AH batteries @ the back! The 5" cordless I'd describe as just OK. No better than anybody else's equivalent, which surprised me. It replaced a much older non-EC Robert Bosch, which I consider in every way apart from runtime every bit as good as the newer Metabo. It's also one of the rare tools that I've ever had to return for warranty repair. Apart from this anomalous tool the rest are superb, powerful, versatile, ergonomic and reliable. All of the corded 5" are specialist tools: a bigger two-hand old version of my 6" grinder, one lower V-speed for stonework, one ultra-low V-speed one for Stainless processing, sanding and wood carving & another quite old (30yrs?) extremely heavily used compact V-speed one that I once used for everything, but now just for carving. In my opinion, nobody makes better grinders. I still have a big 12" Robert Bosch grinder/diamond floor saw too.
I also have an amazing little triple-reduction keyed chuck drill with a puny 750 watts and about 650 RPM max that will out-torque any other drill that I've ever used. Seriously. I've driven 7" diameter earth augers with it! It's more torquey (75nm) than my 1500W Bosch coring drill! It almost ludicrously compact & lightweight, but fits all the 43mm accessories from their cordless range: angle drives, offset, keyed and keyless chucks & even the incredible additional triple reduction gearbox (a 6 x reduction in total making for an unprecedented 215 nm - less some friction losses - @ 220 RPM).
I'd love to have some more corded Metabo drills. Most are super, but unjustifiable as I still have a useful collection of very old AEG/Atlas Copco single & 2-speed hammer drills (4) that will undoubtedly outlast me.
Whilst Bosch is still (I believe) the world's premier manufacturer of SDS Plus & Max hammers (I once had 5), I nevertheless have an older Metabo inline 1,700W Max combi-hammer which was (& I suspect still is) the most powerful hammer that still drills. It has a useful 20 J of impact, and a genuine 52mm solid quad-tipped hammer drilling capacity in stone. There's more modern Max hammers around now, but none (I think) as powerful. I like its (now rare) inline design. Most Pneumatic hammers have transverse (or 'L'-shaped crank-to-piston drive mechanisms). Its long length makes it less useful for holding horizontally (both too long & heavy), but ideal for such esoterica as trenching, breaking slabs & the occasional big doleritic boulder & even spading hard-packed soil & clay for tree planting & gardening. For me, its a viable, economical & much lighter alternative to a Wacker-Neuson hex hammer or equiv.
I still use a couple of little Metabo SXE 400 sanders, simply because they perform so well and will accomplish tasks impossible for lesser tools. Tiny, lightweight, slim, gentle and extremely easy to handle. Everything, for instance, that my diabolical flamin' RO90Dx Festool wasn't.
I've had both STE 135 & 140 Jigsaws. Whilst neither are the equal of Mafell's beauty in natural & synthetic wood derivatives they're both way better than Festool's flawed Trion version. They're also the only jigsaws that I trust for heavy duty 2-10mm steel cutting, better even than the more powerful Bosch Jiggies. I especially like the headlights, switchable blower and auto-accelerator function of Metabo's 140 Plus version.
Which brings me to Metabo's cordless range. Somebody above said that "not all Metabos are equal" or words to that effect. I even stated that I was "unimpressed" with their cordless range. In some ways, this is still true, but in others it's also simultaneously a furlong wide of the mark.
Simply put, Metabo uses the world's best battery system. Their LiHD batteries (& Robert Bosch's ProCore equivalent) are the current absolute gold standard. It's so good, in fact, that many other high quality, specialist German tool manufacturers share the battery interface and format with Metabo. Meaning that you also have access to Mafell's superb range of Cordless saws (also the current gold standard), Rothenberger's range of plumbing press tools, Collomix mixers, Eisenblaetter's sander/grinders, Starmix & Rokamat vacs, the latter's hot-wire cutters, concrete grinders & pokers, plaster sponge floats & backpacks. Plus Steinel's cordless hot-air guns, & undoubtedly others to come are all part of the so-called Cordless Alliance System which use this common battery interface.
Of course, quality doesn't come cheap. Most are what I consider to be true professional grade tools, with commensurate pricing. Metabo actually (at least in their cordless drill range) offer some less expensive or professional product lines too, which are much cheaper, smaller, lighter and of somewhat reduced capacity. As always, the highest quality tools in the range/s still retain Teutonic manufacture.
For those already heavily invested in Hitachi-Koki/Hikoki/HPT, Makita or Milwaukee this is all probably irrelevant as these 3 manufactures already make a huge & versatile range of budget-priced & often adequately performing cordless tools anyway with their own proprietary but incompatible & slightly sub-standard batteries. The major difference is that the CAS collectively make a much smaller but nevertheless generally extremely high quality (& occasionally world's-best, but also unfortunately occasionally slightly dodgy too) specialist and generalist tools. Currently there's a "mere" 130 cordless tools available from the CAS, which is I'm guessing dwarfed by the rather bewildering array of offerings from the East Asian tool companies.
Whereas Metabo once made pretty crap cordless tools (their Saber & Circular Saws still are) their top-shelf drills are literally state of the art. I have a fantastic 3 speed non-hammer drill that is relatively light, fast, compact and awesomely powerful. It drives 32mm Speedbors with relative ease in Eucalyptus hardwood (previously impossible for a cordless tool from any manufacturer), 52mm spade bits and big single-flute augers. Yet also drills 1/8" pop rivet holes in sheet metal faster than any other drill I've ever used (@3400 RPM). Another (Tapping) drill will also drill & tap holes in 1/2" solid steel, automatically, seamlessly & intuitively reverse/drive cycling the regulation backwards 1/2 turn and forwards 1-1 1/2 turns, dependent merely on hand pressure.
Metabo's fantastic Quick chuck and accessory range is an absolute highlight for me. As the rather gimmicky name suggests, these are rapidly & easily exchanged between every "Quick" suffixed drill in the corded and cordless ranges, including that amazing triple reduction gearbox with its 12-14" long handle that I've already raved about. A choice of very strong all-metal chucks, hex-bit holder, alloy angle and offset drives make the new Bosch equivalents look rather puny & plasticky in comparison.
Of my other Metabo cordless, there's a fantastic, big powerful floodlight that I find equally at home in a darkened room or mounted on the roof for backyard BBQs. An OK (probably not as good as Makita's best) EC Rattler, a hideously expensive but extremely useful & fast auto Riveter, an extremely lightweight, accurate & surprisingly capacious older SCMS (that is now probably surpassed by the latest Makita & Hikoki releases) & the aforementioned pair of little & large cordless grinders.
Plus a couple of Mafell's finest cordless tracksaws: Plunge and Circular/Crosscutting Combi.
Of my own personal collection of cordless CAS tools I'm actually - at last - delighted. I'm not easily pleased & even more seldom impressed, but those that I'm using are nothing short of superb, if not approaching (with the possible exceptions of the smaller Grinder & the Rattler) the very best currently available anywhere or from any manufacturer.
Of the tools that I've been using over the past 40 years or so I'm still impressed. Of (almost all of) those cordless tools that I've acquired & used over the last 5 I'm honestly delighted. A rare but serendipitous combination of modern, sophisticated features & strength. Highly recommended.