The biggest advantage I see to banana plugs is ease of use when doing a lot of swapping out, eh ? So, if the connections are to be left in tact, does one get a better wire to terminal connection just using the screw down attachment on the binding post, onto the bare wire ?
Current travels on the surface of the wire, which is one of the reasons we use braided wire.. (more surface area).. It would appear to make more contact with the larger screws used in the binding posts, not to mention more secure?
If you were to solder, it would have to be a good job (read: clean, right temp, etc), or you end up with voided areas of non-contact.. Areas you probably wouldn't know about ?
So, solder (spade or banana), non-soldered spade banana, or binding post provided set-screws ?
PS: Are Radio Shack plugs and spades good nuff ?
