For Quality and extreme value you can't go far wrong with this top brand HP desktop, supplied by one of the best retailers John Lewis. The evidence:
Less than £370 subject to sucssesful discounts. John Lewis 2 year guarantee. Windows XP Media Centre Edition 2005 (Unconfirmed by me but highly likely Vista upgrade)
Intel Pentium D processor 820 Dual core(2.8Ghz unconfirmed by me ) | 2GB Ram | 7x USB 2.0 | Memory card slot 9-in-1| FireWire / IEEE 1394 ports 2 | Graphics card NVIDIA GeForce 7300LE | Graphics card - video RAM 256MB | Hard drive 160GB | CD / DVD optical drive DVD writer DVD RAM and DVD±R/±RW (double layer)(Unconfirmed by me lightscribe)
This is reduced from £500 to £400 in the clearance sale, there are a few others as well, but for budget value I think this delivers in all areas. To get to the final price use the £15 off voucher found in the voucher section. Go through Quidco to get the rest. I have estimated this to be £16.40 this is a conservative estimate based on 5% of the order value less the £15 voucher and VAT. I will confirm the actual amount when I am allocated it.
There are plenty in stock at the moment but I think it's because people disregard Pentium D processors. Just remember they are more than enough to play games,surf and word process especially when combined with 256MB of graphics and 2GB Ram. I phoned John lewis and the sales rep told me that Dual core means that you are effectivly getting two lots of 2.8GHz, if any of you could confirm this that would be great.
Quidco has tracked at £20 thats 5% of the original price no deductions for voucher or VAT.