I went for the BT version, as I was hoping to find some software to connect to my Nokia 7650 - But I can't... Still!
However, the extra 32MB of internal ram is helpful - I put all the "main" programs in it, as to not worry about the CD being filled up.. (I.e. PPX, Isilo, etc)
For the extra money though, I think I should have bought the standard version!