Nobody has mentioned lens quality. You can put a paint bucket size objective on a cheap scope and it want make it any better.
My first quality scope was a steel tube Kahles. 3x12-56. Followed by Swaro aluminum tube 3x12-56. For the most part twin brothers. These models preceded the Swaro PH series scopes. They were also the last scopes that lead was used in making the lens. Lens quality dropped because of this.
Basically you get what you pay for. Hasbeen