Hey,
a few things: a colleague runs Bosch 18v machines so we can mix and match our stuff.
The Bosch 18V hammer drill is on par with the BHC18 though the BHC18 has better antivibration control. It does not bother me much as I don't cramp up when I drill, I let the drill do the job instead of pushing hard. For holesawing larger holes I find the Bosch is better. Also the Bosch does light chiseling which is handy.
The Bosch GDX VE impact is a better impact than the Ti15 and handles great. I sometimes need an impact, though not too often. It drills very well too. I think the newer Bosch drills are more reliable than Festool.
Bosch has showed that 18V machines can be made light, strong and durable. The PDC is a clumsy machine and not something I would enjoy using as a go-to machine. Same with the T18 - it should have been the size of the T12 to appeal to me. I work a lot with the drills so lightweight and great grip are must haves for me.
I have had electronic failures on ALL my Festool drills. One T15 burned out. One C15 did not change rotation at times and continued to drive in rather than back out... ...after a week at Festool it came back untouched and only after I showed the rep the fault was it sent back again and was in for a full month before having a circuit board replaced. Still had the problem!!!
Gave that C15 away and got a new one after a year - it has the same problem... A guy at work borrowed it quickly and asked if the rotation on Festool "is the other way around?" on which I replied: sometimes... The C15 grip is somewhat thicker than the C12 (old one) and with gloves I find the C15 not so comfortable. The T-drills are all comfortable but the magic is in the C grip for me. My main gripe with a C18 would be that the grip would be the same as C15.
So, I've kept the CXS for my Centrotec stuff and have set my mind on Bosch for a great grip, 18V machine versatility and reliability. We'll se how it pans out. All machines I have tried so far work great.
The new Bosch Flexiclick has a locking hex bit holder and is lightweight and strong with a great grip. It is at the collection point and I will pick a pair of Flexiclicks up tomorrow morning.
