Blackjack has decent reviews but questionable battery life. T-Mobiles "Dash" seems to be the real deal, feels good, handles great, slim, sturdy, yet only on GSM :td:
I'll wait for the iPhone to come in a sprint version. Touchscreen will be the way to in the future as it extends the screen size to multimedia active. Essentially Blackberry and Treo will have to make some adjustments. Not quite yet, but in the long run, full screen phones are going to make the race. which, in the end, is going to point towards qwerty on a touchscreen :imho: