Hmm let me see... I've used 950 (old school!) -> 957 -> 7250 -> 7290 -> 8700R -> Pearl (8100) -> 8800 + Curve (8300) -> Curve with Wifi (8320) + Pearl 2 (8110) and currently using Pearl 2 with Wifi (8120) as a cell and 8820 for corporate emails. I have 8330 (Curve CDMA) in my drawer that I'm thinking of using instead of 8820.
And yes, I've actually used all of them for work email at one point or another.
If you look at my location, you might be able to guess how
