Really depends on what you want to do with the phone. Blackberrys are great for receiving emails since you do not have to manual pull them. Unfortunately you have Tmobile so you won't have the use of a 3G phone. That would be one step up if you are looking into the internet feature. Edge/GPRS is roughly 200 Kbps...where as 3G is 700 kbps.... I use both a blackjack and a blackberry, emails-> blackberry>blackjack...internet and other internet related features-> blackberry<blackjack....


Hope that helps...