[EyeB]

I don't know why people worry about the data cap if you know how much you use and know you won't use it all...

But have you thought about buying a used phone craigslist/ebay/amazon or buy outright from sprint and using it on your plan? The phone costs more to buy without subsidy, but you save more than you spend on phone by keeping plan costs down. Using your current plan without upgrade, just adding 4G services you'll pay around $50? which instead of the $70 you'd pay, you save $20x24 months=$480. The subsidy would cost you something like $200-300 for the GSII?