That new BlackBerry Curve 8520 for T-Mobile is in the house, sucking down EDGE data like it's going out of style (oh, right, it is). For a device that can be scored for $50 at Walmart as of tomorrow ($130 at T-Mobile stores), this is a surprisingly solid handset. The keyboard is classic BlackBerry goodness, and the overall heft gives us at least a little bit of assurance that the phone can hold up to wear and tear better than its predecessors. Most of the changes are for the better, like a trio of media keys up top and the rubberized sides, but we're not completely sold on the touchpad. It works great when it works, but if it's too clean or our thumb is at the exact wrong moisture level
