I have a corsair, and i must say, it's the quietest PSU i have ever (not) heard. Would really reccomend it.
I think i will buy one then when i can over xmas or start of next year , which one do you have corsair 620w - 520w ??? i was thinking the 520w would more than enough seeing as i am not planning to run a dual gfx card setup anytime soon .