What exactly is $$$? It's 20 dollars more base price over the Rosewill for a much better quality unit. Not only that but that particular unit comes with a 20 dollar rebate card.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020
This particular one is the one I'm talking about (Seasonic OEM) and it comes with a 10 dollar rebate card.
Another unit which I was referring to is this one.
SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply - Newegg.com
Modular, with a 15 dollar promo code. Or if you don't care about modular.
SeaSonic S12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply - Newegg.com
Cheaper than the Rosewill.
I make a big deal about power supplies in my thread for a reason.
To add on to that, more wattage on a **** unit doesn't mean squat. If they use cheap parts inside, have bad solder joints, or use weak PCBs they can die no matter how much wattage your PC is pulling. You can be browsing Facebook and the thing can die.
I don't want to sound rude here, but you DID put "quality parts" in your OP. Don't put that if you are trying to skimp out. I prefer Corsair and Seasonic for a reason, they have a long lasting reputation for spitting out good units with a low fail rate and high warranty. Antec, Silverstone, Enermax, and Thermaltake also have good high end units, but their midrange and low end usually suck. I try not to recommend Corsair's CX line because they are cheap, and for a reason. They are a notch above the rest IMO but if you're willing to drop 69 bucks on a Rosewill then save your pennies a little more and spend a little more for a Corsair or Seasonic.