I'd do the $30 plan without hesitation, but I use my phone for tethering while at work, and have been known to go over 5 GB before. That's why I'm on Sprint right now, unlimited data. The Value Plan is still much cheaper than my Sprint plan, and while it's postpaid, I'm not seeing anything about 2-year contracts with it, although I will go into a store and ask before just assuming.
Part time human. Full time adventurer.