These are certified Gold and look a cheaper version of the X series:
http://www.overclockers.co.uk/showpr...23&subcat=2383
http://www.overclockers.co.uk/showpr...23&subcat=2383
http://www.overclockers.co.uk/showpr...23&subcat=2383
http://www.overclockers.co.uk/showpr...23&subcat=2383
There is a 360W version for around £45 to £50 and a 450W modular version for around £65 to £70. They all have 5 year guarantees.