I have the M and all 3 of the EF-M lenses.
I find I use the 18-55 most with it (mostly work use), but paired with the 22 the M really becomes an excellent pocket companion to a DSLR setup when I'm shooting for fun - and unlike a P&S, actually provides images with comparable quality. So I'd say the 22 is my favorite.
But often times, 18mm is not wide enough for certain landscape shots...this is where the 11-22 comes in. However, I've yet to use it outside a test session I conducted when I first got the lens. I think that may change, though.
I USED to have a list of lenses I wanted, but now I just use my DSLR...picked up an SL1 on the cheap and at least I can count on those needs being fulfilled by existing EF lenses...if/when Canon decides to finally commit to the EF-M line, we'll see what happens. A macro lens should be next...