The RRS cinch is a good choice if it fits your bino tube. Make sure to get the metal one. The polymer one breaks.
Have you broken one? I haven’t heard this before, and I’ve been using the poly one for a couple years now.
On fitment, it is a little wide at the base, so if you run your binos close together, you may need to run the arca part at an angle. Not a big deal, but I can’t really use the level on my anvil head as a quick reference since spotting it sits at like 30*.