I'm going to be switching either to Sprint with an EVO 4G or to Verizon with a Droid Incredible within the next few days. For a variety of reasons I can't wait on or afford the new phones about to be released (i.e. Thunderbolt etc). My current phone is dying fast (goes through batteries fast and the screen is going). Which of these two phones will have a longer usable lifespan? Currently I'm in an area that does not have 4G yet. I can find both phones at a reasonable price, and though I can't afford the next generation of phones coming out, I want to get the most for my money so that i'm not buying something completely obsolete.