http://www.ebuyer.com/product/161629
http://www.ebuyer.com/product/161634
I bought the second one 2-3 months back, it's on 10-18 hours a day, every day, generally playing a film and using it for browsing forums + msn etc. I also use it for Mir (which I assume you will be?) and it obviously runs it fine, not used anything more draining, but then I never bought it for anything more than that.
Wait until they have 50+ in stock and the price drops by £50, they ****ed me over by upgrading the GFX card from an ATI Radeon 3200 HD to ATI Radeon 4500 HD less than 2 weeks after I bought mine - But that's dropped back down again now, might be worth contacting them to see if it goes back up.