I have been using Paterson plastic reels for nearly forty years. And like any piece of equipment used over a period like that you get to know its downsides as well as upsides. Starting again with something like stainless steel just means you start learning all over again, waiting for the fault, the slip, the cock up, because one day it will happen.
So what are the downsides of Paterson reels? Well, they need to be rinsed after using photoflo, or the balls and get gummed up. The upsides? They bounce.