I also use Winn C-10s. I just prefer the feel of them to a wrist strap release. Earlier this year, I bought a second hand Scott Rhino when I decided it was time to switch to a D loop. It was a great release, but I could never get used to the feel of it. I don't feel that the Winn release hurts my accuracy at all, and it is much easier to draw than a wrist strap, which makes the draw seem longer to me. Like Lady Forge said, you need to relax your hand when you get to full draw. If you put pressure on the palm bar, you will torque the string.

The only disadvantages are that it is a little harder to load the release on a string loop than directly on the string, it is a little harder to pull arrows with your draw hand (probably your strongest hand), and you have to be careful when climbing into a stand with the release on as you can get metal to metal clink sounds if you hit something. If you stalk your way to your stand, as you might in the PM, you either have to be careful to avoid making contact with your ladder or stand when climbing in, or take off the release and try to cover up that velcro ripping sound when you take it off. I'm thinking about making a little leather cover for the release head to use when I'm climbing.