I think releases are like bows, you really need to test drive a few before you buy. There's lots of good releases out there now a days to choose from. If you have a local shop you could go try some out and see what fits and feels good to you. I'm sure the shop wouldn't mind letting you test a few out. I've been using the same Fletchunter Concho for years and it has been a good release for me.
