There are the usual suspects with Sewell and Monoprice perhaps being the favorites here.
I saw a review for Monoprice affinity banana plugs where they tested for conductivity, and among all they tested, the Affinity came out on top. That’s all I needed.
They are affordable. They have dual opposing set screws which are a must in my book. They also offer a 90° plug which is great for behind the speaker.
Order from Monoprice direct, sometimes Amazon.