@sc0rpi
interesting, so have you tried bare wire yourself in comparison to connectors?
Not in 20 + years. Cutting off spades / bananas from speaker cables reduces their resale a lot.
I am not familiar with your equipment so I'm the wrong person to give advice.
What gauge of wire are you soldering? I've had to solder a lot of high current cable to lugs, and I found a small propane torch to work best. If there is too much wire and lug a soldering iron will not get them hot enough for the solder to flow properly. I crush fit first, solder afterwards.