I like banana plugs for the convenience, but I think that spades are generally considered better due to the fact that it is easy to get a gas-tight seal if you have one of the Audioquest binding post wrenches...
Instead of delving into any purported sonic superlatives of either/or let me just say use the termination that you feel the most comfortable with. I personally have a set of spade to spade on one system & WBT banana to spade on the other because that's what works best with the equipment I have & that's what I based my purchase on-which end would work best in that particular application.
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