I would definitely go with TP2 if you are a longtime WM user. All or most of your software would work on TP2. There's a lot of customization that you can do with it as you can see how many threads in this forum. Unless you have a fetish for Touchflo or Sense disable it and that will also free up some more ram also.
TP2 battery life is not that bad. It's definite improvement over TP1. Last me all days with moderate use. You definitely get the rated talk time (unless your signal is constantly 1 bar or less i guess)
We haven't even got to the nice bigger high res screen. That screen kicks asses l
You definitely don't want to make your wm experience worse by using those other devices.....
(Heh aren't we all biased toward TP2? I guess it does say TP2 at the top of forum. j/k).