I spend a lot of time with manual focus film SLRs, so any autofocus is fine by me. Certainly, I'm happy enough with the autofocus on the X100, though I've learned a few tricks in the last few days that should help with the remaining niggles. I'm also going to keep the sigma 50-150 f2.8 and get a suitable adapter to use it as a high quality short tele should I want something with more reach. If the 55-200 is as good as the 18-55 seems to be, then I can swap them when the Fuji zoom comes out. I'm 90% decided on getting the XP1, it's just that final decision that's the hard part!