There are no set rules on this sort of thing. There are many good sounding and bad sounding examples of all sort of connectors and the binding posts. A speaker builder in my area who makes custom amps and speakers, some ultra expensive, looks for some very old (and cheap looking) binding posts that are made, I believe, of brass. They turn out to be not that cheap because the community of small builders know about them and bid up the price. He has some customers insist on better looking binding posts, in which case he uses the likes of WBT silver binding posts.
Gold coated brass speaker spades
Question for the forum.
Whats the low down on brass speaker spades and bananas?
I recently demoed some very nice sounding speaker cables from a reputable manufacturer and found they used gold plated brass connectors. From what I have read in these forums, copper is the preferred base metal. Does it really matter?
What to do?