With hubs - if you really don't care about age - Specialized hubs are quite nice. They evolved (I think) from Sansin - Sunshine - Specialized. Sansin and Sunshine made some iffy hubs, but they also made some excellent ones.

SunTour - it's hard to go wrong there - s long as you don't get something that's all worn out.

PM me if you have some derailleur wants. I have a bunch sitting in my derailleur drawer.