Quite the range of options there, and all solid guns. I wish FN produced an FNX-9c, that might be up your alley too.
RAMI vs P01... rail, upswept tang, little bit of size, little bit of weight. I got my .40 RAMI when I wanted a backcountry/hiking gun that would be carried more than shot, but could hold its own accuracy wise.
Polymer hammer fired guns? The HK USP compact is just a tad trimmer/lighter than the P01 with a pretty good trigger out of the box.
If you are going to want to work on it, get czc or cgw parts, the RAMI has the wide hammer (just to add a little more confusion....)