After shooting my Viper Nano for one year I still don't need to buy a new bow lol. Just replaced my strings (thanks JBK) old ones had over 8000 shots . I can say that the string change and tune were very simple and easy to perform. It is very satisfying to be able to work on your bow like this. I recommend this bow to anyone from beginner to seasoned vet. Smooth and solid. Since the closest pro shop is over 3 hours away( I wouldn't let them tune the spokes on my wheelbarrow) to have a bow like this is awesome. No issues and easy to work on for a newbie.