Spade vs bare wire

With decent high purity OFC I find bare wire is fine due to its low oxidation levels.

If you want connectors then get tarnish resistant ones that are also air tight giving the cable little or no chance to oxidise. Soldering can have it's own issues, as I discovered with that horrible Linn and Naim cables we were recommended back then. 

I'm pretty sure that although the differences in resistance would be negligible in either case I prefer bare wire as it's cheaper and infinitely more practical.

Low mass BFA bananas are my choice and have been for the last 20 years. My first experience with them was the Nordost Z-plug on their Super Flatline Speaker cables. Since then, I've purchased similar low-mass BFA bananas and soldered them on my own cables. Right now I'm using The "No Frills" Audioquest Type-4 speaker cables from Audio Advisor, built with BFA bananas. Great value IMHO.

I like bananas too, for a snug fit and easy to remove and replace.Bare wire would be my second choice,no worries if the binding posts are close together and the spades are in danger of touching.

Never had an issue with the Furutech locking bananas that came standard with my speaker cables. Finger tight is the rule and the sound is wonderful. 👍

All the best,
Nonoise