Actually I didn't switch; I opted for both devices. With my HTC HD2, WinMo 6.5 [hoping for the 7 upgrade], I am able to do everything that I'd do on my laptop within my college environment and for my online business; so, this phone is awesome. Having the ability to tether, with T-Mobile for free is the key. I also have the Galaxy S Sumsung Vibrant and it's my "social device" and I sold my iPhone to acquire this device and haven't looked back. So, each device has it's own realm of operation. In my opinion just make sure whatever device you acquire it suits your needs; if not, then you may want to come to T-Mobile. Purchase one smart phone and get the other free (of equal or lessor value Unsupported Browser).