I had an AT&T Bold. Could not wait to get rid of it. I am loving the Verizon Touch Pro 2 pretty much. There will be a few things you'll miss about a BB, but not that much, nor will you ever have iPhone envy ever again either
It WILL take some getting used to the slide out full keyboard though. No more 1 finger typing. But if an on-screen keyboard is ok with you, then I would go with the Imagio. Both of these will do you well. And WAY more tons of tweaks and hacks to look forward to, then the BB!!!!!! So if you are like me (never leave your new car stock for long, or always tweaking your PC, etc), then the WinMo phones are really for you!