I don't know if you mean for hunting or not. If not for hunting, my favorite release without a doubt is the truball King George. I like this release best because of it's adjustability, and the ability of shooting the release with a combination of my thumb and pinky at the same time. It's not very quiet though and I don't use it for hunting.
I use the truball pro diamond for hunting mainly because it is the exact same size of the King George and is extremely quiet in the field. I use both of the releases with a talon, but as an option, I can interchange any of the releases with a single or double ball.