I hate to sound like a broken record, but the TP2 really just IS faster than the TP1. I don't know how HTC did it, what tweaks they made, or what, but really, it is so smooth, almost like butter, with minimal "lag". And I genuinly mean that.
Some people say, like when I had my Mogul "oh this ROM is FAST, no this!!! Try This!!!"
Well, really, the TP2 is really faster than the TP1, and I have no fear of annoying slowdowns and crap when I'm doing smartphone wars with my friends that have Blackberry's and Iphones.
Something that piggybacks on the statement above, and that hasn't been mentioned yet, is how SENSITIVE the screen is. On my Diamond (I went through 3 of them), I always had to press harder on the screen than I ever did for any of my PalmOS phones.
When I got my Touch Pro, the screen was NOTICEABLY better, still had to press with somewhat pressure, but it was minor and could definitely get along fine.
So far with my TP2, this thing is so sensitive, just like my old PalmOS phones/pda's. Very nice!
I still miss my Touch Pro though, IMO, it is the better looking of the two (I LOVE Chrome), but I just found a couple of OEM Chrome Faceplates for cheap for the TP2, so I'll just slap that on and dye the back silver/grey