Banana plugs by far, just because of their simplicity.
Color doesn't matter so much, as neutral as possible is nice though. Either very pale or very dark. I wouldn't shy away from, tie-die though.
Look and feel don't matter as much as it being very, very sturdy, but still flexible enough to bend about 90 degrees. If it bends that much, I'm happy, and if that's all it will bend because of how darn strong the material is, I'm even happier.