I ordered a new Leupold Mark 6 3-18 with illumination and it arrived last night at my local gun shop. Had ordered it from a well known and respected distributor, and when I took the scope out of the box, it did not have illumination. Leupold had put the wrong scope in the box, as the box displayed the proper SKU, but no illumination with the 7.62 CMR-W reticle, M5B2 turrets. Called the distributor today, was informed that not only had Leupold put the wrong scope in the box, but they as the distributor had priced the scope wrong, and if I wanted illumination, it would cost another $900+. As it turns out we also had a new USO 5-25 in the shop at the same time. I fully realize that you are asking about the 3-17 USO, but this was a great chance to compare the brands side by side. The Leupold had very nice glass, which is a big improvement over their mark 4 line, but I can not say that it was better than the USO glass. Clarity and resolution were excellent in both scopes. Feature for feature, I prefer the USO. The Leupold came with a capped windage knob which did not make sense to me on a tactical scope. The Leupold was very compact and very well ballanced, but the reticle design may not be the best for a first focal plane. After hearing the news from the distributor, I will be sending it back and ordering a USO 3-17. With illumination, the USO is a much better value. Just my opinion.