Generally T-Mo deploys upgrades to the OS and was the first to deploy the newest version of the bb webclient/BIE upgrade to it's users. And also, it's only 20$ for unlimited international BB data roaming. No other carrier offers that kind of deal, so it's great if you're a jetsetter
I was @ a RIM event recently and the rep that I was speaking with had awesome things to say about the 8700. She said we'd have it at the begining of the year, and she thought Cingular had a 6 mo exclusive, but it wasn't finalized yet. So here's hoping for the shorter side
DX