I've just bought an asus aspire one (120gb hdd, 1gb ram) for £244. Got rid of the linpus linux that comes with it and stuck vista sp1 on it. It runs really well with very little lag, and surprisingly good memory/cpu usage with sidebar removed and a bit of optimisation. Runs divx really well and even some HD stuff, along with most emulators and i've even got halflife and return to wolfenstein running on it perfectly. The thing feels really well made with a really nice keyboard and screen. Battery life is cack (you can get a 6 cell for about £50), but wlan is very good with decent reception. There is also a decent little app to turn off the fan until it reaches whatever temperature you set it to, which improves battery life quite a bit and makes it silent 99% of the time. Overall i'm very impressed and next to my first choice (msi wind) I would say these are the number one choice on the market atm.