Ok, well here's the deal. I have a mpx200 which isn't that bad, but all of a sudden stopped charging. So its time for a new phone. I didn't wanna buy a new phone this early cause of all the great phones that are coming out (like the htc wizard, or hp 6500's) , but it looks like i have no choice. So right now i'm pretty broke so i could only afford one of these pda/phones instead of the higher ones. I'd prefer the 5600 but it's also more expensive then the others. So whats everyones experience with these bad boys? If I pick the 4100 or the 600, would t-mobile would replace it if something goes wrong with them? or should i just call t-mobile and tell them my contract ends in october and threaten to go to cingular if they dont give me a phone?