RE: New Release
I would recommend getting a slightly used quality release rather than a new one that isn't of great quality. You can usually get a top of the line TRU Ball on AT.com classifieds for $75-$90.
I have had a TRU Ball Ultra Xtreme, as well as their ST-3. Both when adjusted right had no noticable trigger travel. It's all in how you adjust them. The ST-3 actually boasts the least amount of trigger travel in the industry at .001 movement, I can't notice any movement in mine.........it breaks like glass for me.
I amcurrently using the ST-3 for nearly everything from 3D to hunting to indoor, for hunting it's pretty cool because there isn't a head that needs closed on theloop, you just hook it up and shoot. When hunting I use their modular wrist strap just so I don't drop it.