I went through the same thing a while ago. First was what polymer gun I'd like to carry. After a while, it came down to either a USPc or P2000.
Now, for me it came down to a few factors:
-First of all, I didn't like the .40 S&W round, so that was out.
I am a big fan of the .45 ACP round, so it came down to caliber also. But I wasn't adverse to carrying a 9mm either since I could shoot it quickly and accurately.
What I LOVED about the USPc was the option to carry in condition 1 (cocked and locked). But really, that was all it had going for it. But it was a
BIG factor for me.
Compared to the USP, the P2K had a LOT of pros. The grip was MUCH more comfortable than the blocky USP. The P2000 was smaller than the USPc, which I never did feel that the USPc was much of a compact. The P2000 had a better DA/SA trigger than the USPc. The P2000 could it into USPc holsters, what's not to like! It was compatible with USPc magazines.
Then lastly, remember how I liked condition 1 carry? There was one thing that ruined it for me. I shoot high thumb, so to disengage the safety I ran the possibility of further
decocking the gun as I bought it up to presentation. That kicked the option of the USP out to the curb, and now I have a P2000.
Go for the P2000, its a better gun.
The USPc ain't bad either, but dang is the P2000 one sweet shooter!