>>1598077>what constitutes a "good" derailleur versus a "bad" derailleur, or a "good" shifter versus a "bad" shifter, or a "good" tire versus a "bad" tire, etc.there are generally better and worse manufacturers, and these offer low to mid to highend component lines which you'll often come across (e.g. Shimano Nexus vs. Alfine shifters)
depends on what you are after, often times you don't need the highend one, other times the mid/lowend ones really are not that good or have different pros/cons when it comes to maintenance
I bought a Radon Urban FE a few years back based on a coworkers commendation, they don't make them new right now but maybe you can find a used one (should be in that price range used)