Depends if you're asking about the build quality, or if the focal length will suit you?
Answer to part one: 50mm primes are some of the best performing glass because they're easy to build and the optics aren't complicated. So any 50mm prime with serve quite well, unless you've got specific pro needs (extreme overall sharpness, excellent micro-contrast, perfect edge to edge sharpness, etc). I'm very happy with my 50mm prime on my crop body for portraiture.
Answer to part two: For the body you're pairing lenses with, 50mm is a pretty good focal length for portraits and nailing a subject, but not the things around it. 35mm will be more of a "normal" (as in closer to the focal length of the human eye) focal length on that body. 23mm might be even better if you're trying to capture a scene. Be aware though, that since you're choosing prime lenses you'll be zooming with your feet (walking closer and further away) instead of zooming with the lens so the free area around your subject may be the determining factor on what focal length you should choose.