If you want a cheap but powerful phone with honestly unlimited data, 450 minutes, and unlimited text for 69.99 a month, go with the LG Optimus S. This way you're not paying for a 4G phone (Epic, Evo, $10 additional per month) when there's no 4G in your area (if you dont have it yet).
There's also an exploit for the Optimus that turns it into a free wifi hotspot and you can get internet on your laptop anywhere you want, for free.
http://www.market4android.com/how-to...lg-optimus.php