Ah, if you are planning to spend that much then I would suggest you just buy a GTX 560 or go for a cheaper option. You can get a GTX 460 1GB with a 725MHz core clock and a decent cooler for £110 here - so I wouldn't spend £45 more to get the SC or SSC EVGA version.
how do you know its a quiet cooler?
im gunna ask on FSX forums about the GPU issue... if a 560 is only under about 30% load on FSX does this mean I can drop down to a lesser 460 and save money and get the same performance...?