I should have mentioned this when I found out from our sales rep last week, but T-Mobile is now selling the Blackberry 7290.
This is a newer version of the old 7230 with Bluetooth built in, quad-band support (850mhz, 900mhz, 1800mhz and 1900mhz) and 32MB of memory (twice what the old version or the 7730 has).
We just ordered one so I'll blog my experiences with it.
By the way, their website still lists it as coming soon, so I'm not sure if they are only offering it to corporate customers at the moment or what. I'll post any news I get when I get it.