WBT Banana Connectors

Look at BFA style.  many options but make great contact, are one peice, and low mass.

Prong seperation is one of the main reasons I like BFA.  Most people don't realize how many pieces there are to a traditional banana plug.

Those z plugs are what I call BFA.  I'm just going by what I've seen them called.

This thread is bringing out the technical challenges  of banana connectors.  Traditional bananas are often gold plated steel (yes steel) as springs are needed to make them expand in the "banana" section.

Solid silver and copper (such as ofc) are very soft.  KLEI is one of my favorite connector manufacturers.  they make low mass, high conductivity connectors.  but solid copper won't be strong enough with a heavy cable.  

I like the tellurium copper with heavy silver plating (tellurium alloy copper is not quite as conductive but much stronger than pure copper).

Jerry