There are 2 50mm lenses. 1 is an f/1.8 and the other is an f/1.4. I have the f/1.8 lens and love it. It is on the affordable side at about $110. It is an older lens (in other words it hasn't been updated in a while, Nikon is still making them, but no changes have been made a quite a few years). It is great optically and performs well in low light. The f/1.4 version is said to be even better optically and produces better bokah. Its is also about $170 or so more.
The 60mm is an f/2.8 Macro. The macro feature on this lens is very good. Its not as fast (1 1/3 stops slower). However, optically it is excellent. Great AF, true Macro at 1:1. I have a buddy who has it and loves it. He uses it for work as he does a lot of macro stuff. It is expensive at about $250 or so more than the 50mm f/1.8.
All lenses are tack sharp and produce wonderful images. In the end it depends on your budget and what you want to use the lens for.