When T-Mobile finally decided to join the 3G data card bandwagon earlier this year, we figured it prudent to grab a few sticks from the likes of T-Mob, Sprint, Verizon Wireless and AT&T in order to see which carrier provides the most bang for the buck in the mobile data arena. And trust us, it's about more than just uplink and downlink rates in 2G / 3G regions these days -- it's about figuring out which operator provides the coverage you need at the price you can afford, all while dodging those precarious overage
