Just an FYI, 3 years ago right after thanksgiving I was building a pair of new systems.
Most here on the boards were all gloom and doom because I went with a 50$ Mwave case w/500 watt power supply.
Tried to tell me that it wasn't enough PSU, and that it wouldn't likely last a year, etc, etc.
Now my buddy who built a pair of systems some 4 months after me with a tiger direct case's has lost both of those power supplys.
My systems are almost 3 years old and are still performing flawlessly. Still gets more than 60 fps in most situations.
And the power supply that everyone gloomed and doomed about, its still doing just fine. Yes, BOTH of them.
Besides, if a year or 2 down the road, a psu goes, 40 - 70$ gets you a new one, 1 hour swap out, and your back in business. Its one of the easier pieces to swap out in my opinion.
So save your $$$ and give the rosewill PSU a shot if you like.
Just accept that at some point you may have to replace it.