I'm with Firstlight.
I shoot 3 fingers under. I want a palm plate to help place the tag and for comfort. But I don't use a 3 fingers under tag.
It must be cordovan for smoothness and durability. I've been using the same Cavalier Elite (cordovan) for at least 3 years and I shoot a lot (until two months ago, nearly ever day).
My next choice and a bit less expensive is, I think it is a Jenkins with leather palm plate.
The only problems with the Cavalier are:
1. Replacement cordovan can be difficult to obtain.
2. The metal palm plate could scratch a bow if not careful but I haven't scratched one yet.
I have a drawer full of other tabs, often two of each, that I didn't like as much as the Cavalier.