Has anyone used The Perfect Bit?  I have a friend who just purchased one. I never heard of it. So, I wondering what other people's opinion and/or experiences.  I did see a post from 2015 on google, but there was only one response.

I have two. When a horse likes it they like it. Other horses don't. It's a crap shoot like any other bit. It's a nice one handed bit.

I've also got two of them.  They are like all bits, will work on some and won't on some.