We've standardised on Dell at work, and have been using Dell laptops for years.
I recently purchased a Dell Dimension 5000 from the Dell Outlet for about £450, P4 3GHz, 1GB RAM, 2 x 80GB HDD, DVDROM, DVD burner, 128MB ATI X300 video card with TV out, Audigy 2 sound card, wireless keyboard and mouse, no monitor though. VERY quiet, only needed it to record CCTV so I flogged the video card, sound card, DVD burner and speakers on eBay! Spec. would normally have cost just over £800. Highly recommended. The Dell Outlet stock is constantly changing, so if you don't see anything you like, check back in an hour or so. There are usually "£50 off" or "free delivery" offers on them (check through the optional extras when adding to your basket) which offset the VAT.
DON'T TOUCH TINY WITH A BARGE POLE!
Tiny and Time came bottom of a Which? customer satisfaction survey, their customer service absolutely sucks.