Smart,
yes, 220kbps is the max you can et on the field. Theory says 236kbps, but due to signalling blocks and multiplexing with other users, 220 is the best I ever managed to achieve.
You can also get a MS class 30-33 phone, which will get you 5 DL PDCH, which is max 295kbps (in theory).
Regards
pix