Still, the £35 (+£53 for N900) and £40 (+£20~) pm 12 month contracts on MPD worked out at a better deal. The first got you everything for £450. Unless you were lucky enough to get the N900 for £300 thanks to Nokia's loopwhole, sim free deals can't match this for value/service.

Regarding using so much data, I find myself using anywhere between 500MB and 2GB a month using just my G1. You could easily use 100MB in 10/20 minutes of browsing Newgrounds, Youtube, or if it works the IPlayer. With Tethering this obviously can get even higher!