I recently purchased my machine from a london based firm, Arbico.
They specialise in building performance computers while keeping prices down. And overall, I'm very impressed.
I bought the 6600GT, and not only extremely aesthetically pleasing, it was phenomenonly cheap..
I got;
Choice of Cases
Choice of Intel Core 2 Quad Q6600 or Intel Core 2 Duo E6850 CPU
Gigabyte GA-G31MF-S2 Motherboard
512MB nVidia 8600GT Complimentary Upgrade To 1GB nVidia 8600GT PCI-Express Graphics Card
Choice of 4 x 1GB Kingston OR Corsair PC5300 667Mhz DDR2 Ram
500GB SATA 7200RPM Hard Drive
20x Dual Layer DVD +/- Rewriter
19" Hannspree NewYork Widescreen VGA/DVI 700:1 5ms
Choice of Windows Vista Home Premium OR Windows XP Home
Multimedia Keyboard & Optical Mouse
AVG AntiVirus, OpenOffice & Nero
Also known as QC6600GT / QC 6600GT / QC6600 GT / QC 6600 GT
all for £600! Including an upgrade to a 22" monitor
Just letting you know incase you're looking for a new computer.
The site is
www.arbico.co.uk
take a look!