Home build vs. Overclockers UK Build!

[Artemix]

Alright, Im getting a new PC, and had a thread on the components, and I had finally decided on this build:

Case: Thermaltake Soprano Gaming case
PSU: Thermaltake 750W
Processor : AMD Athlon X2 255 AM3 3.1ghz 4000MT/S
Hard Drive : 250gb 8mb Cache Serial ATA
Memory : 4gb DDR2 800 PC6400 (2x2GB ADATA RAM)
Motherboard : Asrock K10N78-FullHD
GPU: XFX ATI Radeon HD 5750 512MB GDDR5 PCI-Express
Optical Drive : 20x Lightscribe DVD Writer

BUT then I found this on the Overclockers UK website:

Case: Coolermaster Elite 335 Case - Black
Processor: AMD Athlon II X2 Dual Core 250 3.00GHz
Power Supply: Corsair CX 400W ATX Power Supply
Hard Drive: Seagate Barracuda 7200.12 500GB SATA-II 16MB Cache
Motherboard: Asus M2N68-AM SE2 GeForce 7025 (Socket AM2+) PCI-Express Motherboard
Memory: Kingston HyperX 4GB (2x2GB) DDR2 6400C4 800MHz Dual Channel
Optical Drive: LG GH22NS30 22x DVD±RW SATA Dual Layer ReWriter
Warranty 1 Year Onsite Collect & Return Warranty
Sound Card: High Definition 7.1 OnBoard Sound Card
Processor Cooler: AMD Black Edition Approved CPU Cooler
Graphics Card: OnBoard Nvidia GeForce Graphics

Alright, so I would have to get a graphics card, most likely the XFX ATI Radeon HD 5750 512MB GDDR5 PCI-Express, so total cost would be £413.98 including the card.

Cost of the first build is £425.89

Would want to run Win 7 64bit, probably just home edition.

Also looking for upgradability here, so I have options in the future instead of having to get a new rig. This would be used for playing some newer games on a 22" sony bravia 1080p screen.

Thanks, and heres a link to the OcUK build: http://www.overclockers.co.uk/showproduct.php?prodid=FS-187-OK&tool=5

Artemix