While the world chatters on about WiMAX and upcoming LTE 4G data services, T-Mobile has been quietly rolling out their 4G HSPA+ network to 80 metro regions and it rocks. The Rocket 2.0 USB laptop stick works on T-Mobile's EDGE, 3G and 4G networks with support for Windows and Mac OS X. HSPA+ has a top theoretical speed of 21Mbps and we averaged 5Mbps down handily with their latest mobile broadband modem. T-Mobile's monthly data plan is priced very competitively too vs. the 3 other major US carriers making it well worth a look.