There was a period of time when they were very good, maybe even exceptional for the price. That did not last real long, and became a hit or miss proposition. Several owners later they are just another inexpensive Asian scope. I have lost track of the parent group at this point. I still have one of the 8-40 x 56, 30mm tube units. At 36x my T36's or Sightrons are way better units. It is better than a 24x Simmons I have floating around at 24x. As with everything, they do due what they are supposed to at the price point.