I have two bits that I seem to use most.
1. D'ring snaffle
2. And I have an old Crockett bit I did some bit and spur trading for its nothing fancy just a solid curb bit with a low port.
I use the second bit on any of my horses that I know will respond to leg aids. I Hate it when people use a solid bit and then pull on one rein. If they still need work on responding to legs then I like my snaffle.
In my horse pic's I am riding Flint in my snaffle bit.