well my friend has vzw... and even with my 3g not running to full 3g speed still loads web pages 3-6 secs faster... and once they come out with a new rom for the 750 ill be getting around 900-1000 kbps ... and right now I'm getting 300-400 kbps without the full 3g experince. thses speeds are tests from
www.dslreports.com/mspeed
on the 1mb test... so if you can go there and see what you get... hopefully I'm somewhat of help.
and I'm aways on this site now... so if you need help with anything let me know and most of the posting I do is with my treo750.