Still kind of new at this (how often have I begun a post that way?). I have a bare entry level but nice Miyata Ninety frame that might fit me I'd like to build up. I'm not interested in pretty, or 100% period correct, or snob appeal -- strictly function.

In terms of quality of function, what are some of the better "bang for the buck" vintage groupsets, especially derailleurs and hubs, worth keeping an eye peeled for? Yes, I know: Suntour and Shimano for derailleurs. But specifically, which models?