I have sprint with the new EVO 4G, and between youtube, Sprint TV, downloading apps, facebook, emails, ect ect, I burn many many gigs a month in data. I also use PDA NET to connect my laptop to the internet like an air-card. Not only is it free, but man on 4G it's amazingly fast.
I don't see why everyone who has 4G in their area hasn't switched to sprint. Unlimited mobile to mobile talking from sprint works for both incoming, and out going calls, to any carrier. Only time you use minutes is when you call a lan line (for me, and most people, that's just about never) and with unlimited data I pay about 70 bucks a month, and thats basically for unlimited talk, text, and data on 4G. Verizon sucks in comparison, and now they going to cut off their unlimited data? lololol.