In theory, there is one more component in the chain, which can alter the electrical parameters of the cable.
in actuality, it doesn't matter. Large spades are theoretically best, but it doesn't matter since in the case of the spade, the binding post is the weak link.
Go for what is practical for you. If you need pins, get some monster cable flex-pins...they are like pins, but made out of a braided cable, with the end permanently soldered together to avoide fraying. It gives FAR better contact than a regular pin, and is aobut as easy to install.
I myself use banana plugs. Easy in, easy out...just the way I like it.