AnandTech has a writeup about the best PSU of the year.
In the mid-range and high-end enthusiast segments of the market, we see a tremendous selection of power supplies with a wide range of wattages, ranging as high as 1600 watts. While most of us will agree that 1600 watts borders on the ridiculous, it certainly illustrates that power-supply manufacturers listen to the market, and will build what people want to buy. At AnandTech, we have tested various models from 1000 to 1300 watts this year, but have no immediate plans to go beyond that. For 2008, we will focus on a wider range of mid-range power supplies rated at up to ~850 watts, which is still quite potent.
Check it out over here. The PC Power & Cooling Silencer 750 gets gold, the Antec TruePower Quattro 850 and OCZ ProXStream 1000 get silver and the Seasonic S12II gets bronze.