Surprised there isn't more love for the BFA style banana plug:
1. More surface area to make good contact, more than a spade.
2. No spring steel needed (yes, traditional bananas are often gold plated steel, put a magnet on them).
3. Crimpable for an excellent contact with the wire. crimp then solder, 2 layers of shrink tubing is the ultimate joint.
4. Low mass.
5. Available in pure copper or silver plated.
Jerry