Running a HD2 WinMo 6.5 TF3D 2.5 ROM on my Touch Pro2...questions?
Though I can't accurately judge speed, being that the HD2's processor has almost double the processing power than the TP2...
Sorry it took me so long to respond!
Android > iPhone OS & WebOS > WinMo > BlackBerry OS
(No Symbian, I've never used it, so I can't judge)
What I'm trying to say is that while the HD2 is an amazing device (check the engadget.com review) I think you'd be happier off with an Android phone, unless you really wanna stick with WinMo. You may want to base *that* decision off of really checking out your different phone options, but I would recommend the HD2/TP2 over a BlackBerry any day.
Hope this helps!