I just built a new computer and so far this 650W Antec TP-650 True Power 650W Power Supply seems to fit my needs well. Though the box 'was marked 500W' and I already sent the item (computer) to it's new destination before I noticed that, I'm sure the box was just mismarked.
Just installed and tested. Seems to be true wattage. Very Quiet. Has 8 pin connector and two 6 pin connector plus modular connections. Very satisfied (note have only used one day for two straight hours)