Any decent brand 120mm cooled PSU run below 50%ish load will be quiet, most will be near inaudible next to the rest of the system.
Corsair are not top of the pile per sae but they are decent (except the 1000 watt model).
I wouldn't buy a Be Quiet! PSU myself:
Jenpo primary
http://www.techpowerup.com/reviews/beQuiet/DarkPowerPro750W/images/inside3.jpg
OST primary
http://www.bit-tech.net/hardware/2008/07/29/be-quiet-dark-power-pro-650w/4
No thanks.
Iv got one in my system (625w) and i like it, and think its pretty quiet (though its in an sg03 case and does have to do a bit more work). Had the older style model in my old setup and thought it was generally very quiet too (bigger atx build then)What about the Enermax Modu 82+ PSU's? Are they quiet / good?
What about the Enermax Modu 82+ PSU's? Are they quiet / good?
Reviews by nature don't test longevity. I'm not gonna touch a PSU that uses an OST primary, no matter how the rest is designed and performs.
Last-gen Antec PSUs populated with notorious Fuhjyyu use to review and perform decently too (and how many of those are in the scrap-heap now).
Any decent brand 120mm cooled PSU run below 50%ish load will be quiet, most will be near inaudible next to the rest of the system.
Corsair are not top of the pile per sae but they are decent (except the 1000 watt model).
I wouldn't buy a Be Quiet! PSU myself:
Jenpo primary
http://www.techpowerup.com/reviews/beQuiet/DarkPowerPro750W/images/inside3.jpg
OST primary
http://www.bit-tech.net/hardware/2008/07/29/be-quiet-dark-power-pro-650w/4
No thanks.

Corsair are not top of the pile per sae but they are decent (except the 1000 watt model).
I was referring to the OPs comments on noise, it isn't quiet under heavy load. Decent PSU otherwise.What's wrong with the Corsair 1000 & what would you recommend?
Do you know OST and have personal experience of them being bad? I don't really see your point.
Primary cap pictured is made by OST, they are one of the better bad cap manufacturers. Using them for a primary cap implies questionable quality (you'll usually see a Japanese brand such as Rubycon or Nichicon even if the secondary caps are China/Taiwan).What is an "OST primary" and what's so bad about it?