How much would I really get with the iPhone 5 on StraightTalk?

Since the iPhone 5's unlimited plan isn't so "unlimited", and the data cap is apparently 2 GB, how much would I actually get out of that? My main use for any phone is texting and calling people, but obviously with the iPhone you can do so much more than that. Since the cap is 2 GB, how much of video, web surfing, emailing or Facebooking would that give me?

Depends how much of each you do, there's no 1 answer.

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