Which is a better deal?

I'm trying to get a new computer for Christmas and I found these and will probably end up getting one of them.


http://www.novatech.co.uk/novatech/range.html?t=pc&c=gaming&r=ENI
(No operating system)

http://www.overclockers.co.uk/showp... i7 920 2.66GHz Nehalem Quad Core DDR3 System
(Antec Nine Hundred case) - (No operating system)

I need help with which one is better value for money..

Thanks.