Unlimited EVDO access on your phone costs $15 per month with Sprint. There are various techniques that allow you to use your phone as a modem with this plan. Officially, unlimited “Phone-as-modem” costs $40 per month (and includes unlimited access from the handset as well). This allows both USB and Bluetooth connections. You may receive phone events but cannot talk on the phone while using the data connection.

Brad is incorrect, #777 does give you an EVDO connection. Speed is probably attributable to the bandwidth of Bluetooth. Tethering with USB is (significantly) faster, comparable to using a data card. Different phone’s have different Bluetooth capabilities, some are more hindered than others.

As far as other sprint evdo phones… The LG LX-550 “Fusic” for instance, supports stereo bluetooth headsets, perhaps it can do data faster (I haven’t seen this tested). The Treo 700P’s blutooth may be faster as well.