bananas vs spades as terminals for speaker cables

Ryriken - Many amps don't support bananas. My old Cambridge A3i supported only spades. My current Rowland 102 (and perhaps all current Rowland amps) have Cardas style clamp - for spades only.

As for the sound, if there is any difference then according to people opinions the best is bare wire (not always possible) then spades followed by bananas.

Rrog - speaker wire I'm using is a little too complex to use bare. It has whole bunch of strands in individual insulations and one that has again bunch of very thin strands. I decided to uses spades. Many purists believe that adding solder introduces another metal and recommend crimping only (Audioquest welds wires in ICs). I crimped my spades to provide oxygen free connection, then soldered it with 4% silver solder. Purists also believe in usage of unplated silver or copper since gold (for plating) is not the best conductor. Silver oxidizes and rhodium enhanced silver spades are expensive. I decided to use gold plated copper spades (from Audioquest) since gold plating (and perhaps nickel plating underneath gold) is very thin and should not affect conductivity. My speaker terminals are already gold plated.