On multiple occasions I have contacted Quietpc.com's pre-sales and have been astonished by the effort they have put into helping me choose the most appropriate components for a particular requirement even when just selling me an £8 fan - they bend over backwards to make you feel confident that you are purchasing the best products for you need and even recommend cheaper products than the ones you have picked out if they feel you're wasting your money. I can't recommend them highly enough!