Over the past few days, Electronista has had the opportunity to test Rogers' new HSPA+ 3G service to see whether or not it lives up to the cellular provider's claims and see what T-Mobile USA users can expect in the near future. With peak speeds of about 21Mbps, it's theoretically three times faster than the best anyone has to offer on a national level. We'll find out whether that's the case with Rogers' only USB modem for the service and provide an important tip for Mac OS X Snow Leopard users looking to sign on.