That one would be an excellent choice. Seasonic doesn't know how to make a bad PSU.
Coolermaster cases have some nice designs, but every one I ever bought was poorly executed, with minor quality issues like untapped screw holes, panel misalignment, loose tool-free mounts, etc. None made the case unusable, but I got tired of it; now I get mostly Rosewill cases (plus my Enermax Hoplite, from HardwareSecrets after they reviewed it). Coolermaster puts liar labels on some of their PSUs, so in general I don't think they deserve my business. I'm not going to throw away the Hyper212+ I bought a couple years ago before I came to this conclusion, but I won't buy another.