Depends on what you need it for. To top a Ruger American, Savage Axis, Remington 783, the Diamond back will help you put meat in the freezer. It comes with the same no bs warranty as the viper and the thumb adjustable windage and elevation (covered), you can reset the turrets after you zero in the rifle so zero is in front. I would be comfortable with this scope up to 300, but for the woods and thickets should get the job done.
If you are looking for intro long range, try a new or used HS-t, the warranty is transferable.