MSI makes an excellent video card. I have three MSI cards in our systems here. The Rosewill PSU you selected will be fine. The newer units are quality builds and known to be reliable as you have read.
generally speaking, the weight of a psu will give you a good indication of the quality of the internals, kinda like subwoofers, usually the heavier the better...
^ That would be the only complaint I have. Kind of like my PowerUP. Only 56A between two rails on an 800w is a little weak. But meh. Quality is just fine.