The XP2 AF's like a champ. I haven't tried tracking. I shot a theatre performance, I was on stage for the dress rehearsal. I was moving around, the performers were moving around and the lighting was fluid and constantly changing. No complaints. I had an XT1 w/ 50-140, XT1 w/ 16-55, XP2 w/ 10-24. I used the EVF on the XP2 and the EVF on the XT1 was much better, I could see a difference in size and rendering. The controls, like all Fuji's, are great, aperture on the lenses, shutter, ISO, et al on top. The battery grips of the XCT1's with the ease of going vertical is a definite pulse for the XT1. The two card slots is a plus for the XP2 (I selected one card as RAW the other JPEG).
I shoot most everything with two cameras. The new 24MP sensor is a significant improvement over the 16MP in terms of high ISO noise. With the 16MP sensor, I shot at 3200 without giving it a second thought and at 6400 with a second thought. I see at least one stop of noise improvement ... But more shooting is needed for me to really see how noise is handled above 6400. Essentially, I need more time with camera in hand before I decide to pick up a second XP2 or wait for the XT2. For me it is all about the final image and I have little attraction for the optical viewfinder. It is there, it works well ... But it doesn't improve the final image better. Now, as a hobbyist, I am beginning to appreciate the photographic experience more ... But not to the point where I find the optical viewfinder as a significant feature.