had been considering an iphone4 but i think i am writing that off as an option. i don't care for the droid x (has been laggy each time i've used it) and can nab a certified Dinc for around a hundred bucks for a year. my concerns: crap shoot getting a certified used phone? also, would LOVE to get grandfathered into an unlimited 4g rate for 2 years. would hate to miss out on that. thoughts?