HiFi, if you've not gone and ordered that PC, I've just found (for the first time)
http://www.pcspecialist.co.uk/results/ and just punched in pretty much the same spec. I'm using as a cost-barometer, and found them to come out pretty competively priced...
JJ/Fin - I've looked at Revo's, AC Ryans and such - and if I go that route (which I guess isn't much different to the Foxconn barebones) I'd probably prefer to build my own. But I'm done looking at computer specs. for the day. Going to get something to eat.