I use the banana plugs from <the place everyone orders banana plugs> - Monoprice maybe ? Anyways, nice and gold-y, happily accept 12 gauge stranded from anyone, and seem to work just fine.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8