I bought my system almost a year ago from them, decent spec, cost about £2000. If you forgo asthetics like airbrushing and UV they werent too bad on price and the DID build to a very high quality. My system was a little delayed due to stress test problems so yes, they did test their rigs. You just KNOW Sods Law is alive and well in PC land, these things can be tested to death and itll STILL die on you when you take it out of the box.
Anyway, Im experiencing a few memory problems and have popped a stick out which seems to have cured it at the mo. I always judge a company by their backup service as they all sell pretty much the same components and can honestly say I received the best service ever from them. Shame they have gone.