I'm confused that the compact cleaning set says is made for a 27mm hose. That in reality seems completely untrue. The 27mm hose fits quite loosely and makes the connection deeper in the pipes socket. You plug in a 27mm hose, it totally looks like it isn't made for the compact set. The 36 mm hose however fits much tighter in the socket and it seems like it was made mainly for the 36mm hose. The connection never comes out as it's so much tighter. Also all three cleaning sets say they use 36 mm pipes, so you really arnt getting any more size in the more expensive sets. The only real reason I can see to get the tradesman or the workshop sets, is that they come with a hose, but it seems you're not even getting a real deal on the hose. The floor nozzle seems nicer than the compact, but you can get all sorts of floor heads for cheap that will fit. Does the tradesman floor head have beaters in it? What extra function does the bigger head have over the compact one other than looking more bulky and difficult to get into places?
The workshop set appears to only come with the tubes and one floor head! For $260 that seems like an incredible rip off. You get way more nozzles and versatility in the $85 compact set.
What is the the rubber grey-finned insert for the head on the compact set? Hard surfaced floors? It looks like the two more expensive sets don't have this head insert and that seems crazy to me. I'm not sure what this insert is for, but it is an option not given in the other two more expensive sets. So you get less versatility, hmmm that's weird.
I like the compact mainly because it's all plastic and less apt to scratch or dent hardwood floors if you drop it while disassembling or whatever. In a YouTube video on the tradesman, you see the guy take out his shiny stainless tube sections and then THUNK, the sharp end hits the concrete floor. If that were a clients house, you have just made a bad ding in the floor. Not to mention with repeated abuse the steel can get bent and not fit well. Also the compact set is light and I didn't need another hose. The floor nozel is light and the other inserts you can put in it are great. But I wish there was comperable 50mm compact set. That is the ideal shop size like my ridgid. All the sets are 36mm and you find yourself avoiding many things so as to not jam in the hose. Please set me straight if I'm wrong about anything, because other opinions are always good to hear. The tradesman and the workshop appear to be more expensive, yet less versatile.