If you cna afford to spend it and you want the speed, then the newly-launched Telstra Elite mobile broadband card is a very attractive 3G mobile broadband option. It offers theoretical maximum speeds of up to 8Mbps in capital cities as well as quad-band access, making it a very sensible choice if you plan travelling and require internet access.
To get it started your laptop will require an ExpressCard or PC card slot. The card can be purchased for $399 outright, or subsidised with a 24-month contract on one of Telstra’s business plans.