Two easiest reels are the old curado b series and the Abu round reels. Both have pretty easy to find parts. I don't have issues with the new revos or shimano reels just think those are easiest. I don't have the knowledge about lewd parts and their easy/ not easy availability. I know quantum parts can be hard to find at times.
Politicians, baseball players, high-powered corporate CEO's they all seem to eventually let us down. Nature, however, does not. Look to her for inspiration and you will learn the secrets to living a good life. The most Important lesson it would seem is to make sure you spend as much time fishing as anything else.