Keyboadcat - if you don't mind me making an observation, but most often when I see you post, it's asking these kinds of questions.
The answer is, more often than not, you get what you pay for. If you buy "inexpensive" gear, that is what you have.
The problem is, ultimately I see you remark that you end up going to some pawn shop (or whatnot) to pick up used gear. A pawn shops is probably the last place I would consider looking to find great used gear.
If you want reliability and something that will last a long time, buy new - and buy from a reputable company with a strong warranty.
Companies such as Rythmik, HSU, SVS, ect. ect.