Medion PC's
We have three Medion's bought at Aldi 2 years ago - they're used in business and for games, so live a hard life, in use 12hrs a day. They've been rock solid, and survived the video cards being upgraded about 12mths ago.
There is a downside, and that is they have 3.4ghz chips which run hot, so the fans are noisy if you work the machine - not a problem web browing, but noisy when playing games.
All in all however, darn good value and we will consider buying the Tesco machines if we can check noise levels.