I have an Excalibur. It is extremely accurate and like has been mentioned already much louder than my compound bow. I can restring it without tools, and store it unstrung during the off season.
It is difficult to cock for the second shot in a Summit Viper stand because of the shooting rail. I use a rope cocker, and a quick second shot is not really an option like a vertical bow.
Don't shoot at the same spot on your target twice unless you like buying bolts.
