I probably have around 300 solderless-breadboard connections in my project. But still, I'm surprised how difficult it is to keep all connections conducting at low impedance ( zero ohms). For example, when I still hear music even though the volume control (5k pot) is turned all the way down, it's likely the ground connection on the pot to the breadboard needs to be jiggled a little.
So now I'm wondering: Are some breadboards significantly better than others? Might I have bought a cheap breadboard, where a more expensive one would have avoided these headaches?
Videos I've watched such as Solderless Breadboards: How to & Common Problems don't mention board-quality as a concern, but you guys would know. If quality is a significant factor, what replacement breadboards should I purchase?