Recently I finally discovered the reason I was having problems. It was because there are different sizes of spades and I didn’t have the right size for my binding posts.
Well, no offence, but not using the correct size of spades (for decades?), or not being able to use pliers to loosen an overtightened nut, that doesn't disqualify spades - it's a different kind of issue.
As for regular banana plugs, what are we talking about?
If it's the multiple spring type, those are more for convenience than performance, as they get loose over time, and are not a tight fit to begin with.
As said above, personally I don't use plugs at all when possible, and basic hollow BFA plugs when I have to.
For convenience and performance, maybe some of those locking plugs are decent, if they don't require soldering, but they still are a big lump of metal and pricey if you want to get the good ones.