Been using an Excalibur Phoenix for about 4 years now. Couldn't be happier. Has the 4x ShadowZone scope on it. Once you set up the scope for the speed of your bow it holds zero year after year. I set mine up like a rifle zeroed at 30 yards and within a inch or two out to 50 yards. But honestly, their loud and deer can easily jump the arrow beyond 30 yards. Most of my kills have been 20 or less yards.. Also, you can cock it in the tree stand. I really like it over a bow because I can anticipate my shot without having to wait for an opportunity to draw or hold a draw for a longtime. Each season a just shoot a couple of bolts to verify I am still on zero and then I'm ready to hunt.
