Which gaming PC for £650?

[TripleT]

Hi I'm looking for a gaming pc for a friend's son. He's got £650 to spend including an is.

Now I know a bit but he knows nothing so self building isis out of the question.

So which gaming pc from ocuk would you recommend including any updates?

Cheers

 

[TripleT]

As mentioned he just needs the computer itself, he has a monitor etc.

I was thinking, for ease, along the lines of either the Liberator X6 or the Defender X6 with some upgrades?

Are these no good? What would you upgrade on the Defender? Baring in mind £77 for win8.

Cheers