HTC’s Touch Pro2 is being widely hailed as the very best Windows Mobile-based smartphone ever. Which makes sense considering that HTC’s legendary hardware is behind the magic, not to mention the fact that the WinMo operating system has been turned on its side and laced with nice customizations from HTC’s software team. This week, the QWERTY-equipped phone went on sale at T-Mobile USA, which is currently the only carrier in the nation to offer it. We’ve reason to believe that the phone will eventually come to