I'm also using a P2 now, and love it. It so far has been a workhorse. Some comments on Philip's posts --
I haven't noticed any problems with the pre's on it, but I'm almost always working from a mixer and going line-in. (I have not verified this yet, but I have been told that the XLR connectors on the P2 cannot be set for line-in, just mic in. You have to go to the RCA connector for line-in (which is what I do anyway, so it hasn't been a problem for me)).
As for timecode, I jam from my Denecke slate and have been using free-run. One thing I did do when I first got it was a TC test, and after about 6 hours, there was a 2-3 frame drift (not sure if it came from the slate or the P2), but jamming is so easy (essentially plug the slate back in for about 2 seconds and I was back in synch immediately and stayed that way again for about 6 hours.
A couple of other things to watch out for...the button to pop out the CF card sticks way out when the card is in. I put a piece of gaffer tape over the card just to be safe. It's easy to pop the card without using the button, so I may just remove the button all together to eliminate this worry.
Also, I discovered this weekend that the Porta-Brace bag I had for my PMD670 can be used with the P2. Doesn't quite fit, but close enough for most work.
Let's see...what else. The display is large, readable and has good information on it. The firewire connection is awesome, very fast. Another thing the P2 does is buffers the recordings, and then closes and re-opens the file as it is recording (every 5-10 seconds) so even if you run into a problem (the chip popping out, etc.) your file will still be solid and intact up to the point of the problem.
Another thing I've seen on mine (Philip, have you seen this?) is that the headphones out seems to be a bit soft compared to what is actually recording (again, at least compared to my PMD670). Worried me a bit at first, but after bringing the audio over to my computer (into Protools) everything sounded fine.
Almost all of the controls are on the top of the P2, so if you're going to carry it in a bag, you need to be aware of this.
That's all I can think of off the top of my head. I'm doing some sound checks to tomorrow for a new project so I may have more feedback after that.
Phil