We knew good and well that HTC's One would be arriving on T-Mobile USA at some point, and for those uninterested in tying themselves to Sprint or AT&T, here's some news that matters: Best Buy has just confirmed to us that it'll begin shipping T-Mobile's flavor of the aforementioned phone on April 19th. The "Glacier Silver" kit will be on sale for as little at $249.99 on a two-year deal, whereas you'll be forced to pay $699.99 for the blessing of having