new desktop for around £300

[gezza08]

Hi im in the market for a new desktop pc, i would like to spend around £300 (may go a little higher for an absolute bargain etc)

not bothered about what OS its running (i have XP on CD anyway, although its not original and im not sure if it is 32bit or 64 bit...and ive heard that matters?!) i dont play many games etc but do like to stream and watch movies (although my laptop has blueray, so thats not important)

i would like it to have 4GB RAM though and obviously as fast a processor as possible, not sure if AMD or INTEL is better though?

not fussed about a huge HD and im sure even 320GB would be enough for me, as i dont download much music/films etc.

I do need a monitor, keyboard, mouse also....

i have been advised of the following two systems:

http://www.crystech.co.uk/Merchant2/merchant.mv?Screen=PROD&Store_Code=CTL&Product_Code=CEX&Category_Code=SYS

or

http://www.ebuyer.com/product/176488

both come without a monitor or operating system, but which is the better and what would you go for.....

if there are any other suggestions id gladly look at them too.....thanks