Frank at Signal Cable used offer and recommend his best speaker cable (Silver Resolution) with just bare wire with silver solder on the ends. For some reason he no longer offers/recommends that option on his website.
Your comment makes a lot of sense, but when I had unterminated 4TC in my system, I observed oxidation and "reterminated" the ends several times. However, following your line of thinking, the speaker termination that introduces the least amount "of something in the signal path" is probably the Eichmann's new "banana plugs." If you are looking at bananas vs. spades in general, I would agree with Newbee, as I also prefer spades.
Your comment makes a lot of sense, but when I had unterminated 4TC in my system, I observed oxidation and "reterminated" the ends several times. However, following your line of thinking, the speaker termination that introduces the least amount "of something in the signal path" is probably the Eichmann's new "banana plugs." If you are looking at bananas vs. spades in general, I would agree with Newbee, as I also prefer spades.