I have been playing around with the sabertooth at the shop lately and this release is absolutely awesome. Smoothe as silk, thin & narrow stainless steel jaws, and the trigger is moved foward to place your trigger finger much closer to the jaws.

I really don't like a wrist release but I think I may have to get me one for myself.
http://www.scottarchery.com/products/sabertooth.tpl

I hate the single caliper releases for hooking to a loop. Maybe it's just me but I find that the loop tends to get stuck between the rear of the jaw and the stationary side of the release. I much prefer the dual caliper style.