Dude, I've seen them all - those phones.
Palm is a dead brand/OS already, Hero looks cheap and like all Android phones they're for beta-testers - I would carry one of those only if they pay me. Maybe in two years from now. As for TP2 - slide-out qwerty keyboards are for teenagers and for retards like you. Get out of your hole and watch the trends: big-screen rules! Ipad-esque.
A powerful WM phone 6.xx it's all that I need, and I can do everything with it with the current existing apps.
As for WIMAX:
1)there are no Wimax phones yet, since we're talking about phones here, right?
2) moving to performance per se, Sprint boast it's just bullshit. Upgrade is long overdue and way overrated. Real tests indicate that HSPA+ beat the shit out of Wimax, where available.
http://www.pcmag.com/article2/0,2817,2359139,00.asp
1Gb processor on t-mo's 3G HSPA will also likely compensate and add to speed.
So don't rush into an argument before double-checking the facts, and I'm not looking for your appreciation or any reputation, I was just speaking my mind out.