I highly recommend the Cooler Master Silent Pro Hybrid 850w. It also comes in two other flavors of 1050w and 1300w.
It is fully modular and gives you lots of headroom for future upgrades.
It also comes with a fan controller which lets you control the fan speed of the PSU itself and whatever fans you have hooked up to it.
Only con is that its a little pricey 850w for $169.99 and $129.99 after $40 rebate.http://www.newegg.com/Product/Product.aspx?Item=N82E16817171061
Just remember when choosing a PSU, quality comes with a price.