I don't know if there is a 'top' rest for fingers shooters these days. Not enough of us left to make any such determination. Right now I'm using a Cavalier Microflyte flipper. I like the magnetic style flippers much better than the spring activated ones. Springs break, magnets don't. Golden Key Futura still makes a whole lot of fingers rests. Go to their site and go into what I think they call their "Oldies but Goodies" section. Something like that.

They still make the Huntmaster Supreme, the Star Hunter and all those good old fingers rests from the 80's, when the only ones shooting releases were a few wierdos on the fringes of civilized society.