I'm still struggling a little with the AF. In high contrast situations it seems to work very well. In shadows, I have to fuss with it a bit. I would also like something between the small and the wide-small focus area. The small hasn't worked well at all for me. The wide small is better, but doesn't always grab the focus point I want. I guess I should try the pin point. I swear I got more in focus with the Z5.
I love the resolution. I can crop without fear. The larger files it produces are causing a few problems, but I am dealing with those. The viewfinder seems crisper. I don't get as many shots per battery charge, but I have yet to have to change out the battery in the field.