@someguy7014 I agree, but to be honest I think I'd rather 500mb than Vodafone's 250mb.
I can see it being something that you'd use alot when you realise what the iPhone can do, and if I'm going to be locked into a contract for 24 months I don't want to be constantly restricting myself or paying massive overuse fees. Plus you might not use that much now, but how much will you use in a year and a half?
Same theory behind why I get $550 worth of calls every month. I rarely go over 300, but it's much cheaper when I do than paying the excess usage charges.
BTW I don't understand people in other threads saying "I went there wanting a black 16gb, came out with an 8gb cause they sold out". Why not just wait a week rather than think "if only..." for 24 months.