Here is a comparison between a few high end scopes including the F1. Hope this helps.
Tester A had a chance to look at Premier 3-15×50, IOR 3.5-18×50, USO SN-3 3.2-17×44, Nightforce F1 3.5-15×50 and Leupold 4.5-14×50. He could not quite decide whether he liked Premier or IOR more, but for him one of these two definitely looked like a top choice. He noticed that the IOR has a warm color cast and did not like it too much, but he liked how much detail he could see with it. He thought the other three scopes were not in the same league as Premier and IOR. Nightforce did not agree with him at all. He had a hard time maintaining proper sight picture with it and thought that the image lacked vibrancy. To his eyes Premier was a little better than the IOR, and USO was a little better than Leupold. Generally, he has some interest in scopes of this type since he recently acquired a GAP-built rifle chambered for 338 Lapua. Once I told him what all these cost, he liked the IOR even more. He is somewhat new to scopes, so the Horus reticle in the Leupold got him more than a little confused. He thought that Mil-Dot Gen-2 reticle in the Premier was a nice uncluttered design and he preferred it to the other reticles here. With the Nightforce, he noted that at low magnification the reticle is very difficult to see.
Tester B was the range officer who looks so excited in the first picture of this article. He thought that most of these scopes were great and they can all be used just fine. He is a target shooter, so he liked thin reticles. To his eye, the S&B with the fine center lines and crisp image was the best scope, closely followed by the Premier and USO. Hensoldt, while very nice, did not have that visual pop for his eyes, but he liked the compactness of it. With the IOR, he could not get over the thick reticle, but liked the image. Leupold’s Horus reticle did not do anything for him and Nightforce looked dim compared to S&B and Premier.
Tester C was a guy who has looked at a lot of scopes with me over the years, so he knew what all of these were and how much they cost. He thought that optically, Premier agreed best with his eyes, closely followed by the S&B. At high magnification, the image quality between these two was very close to his eye. However, he did not like the tunnel vision that the S&B has at low magnification. With March and Hensoldt, he liked the detail in the image, but thought that it lacked some pop due to shallower depth of field. He did note how flexible the eyerelief of the Hensoldt is. Overall, he liked the image through the IOR and the depth of field. However, the warm tint stood out to him and in bright light the image, and I quote: “looked too bright, almost so bright that it hurts my eyes”. I suspect that is his reaction to a different color gamut. With Leupold, he noticed rather strong CA, which bothered him. On top of that, he simply could not get over how busy the Horus reticle is. He found it distracting. With Nightforce, while he liked the solidity of the adjustments, he thought the image looked dull and also noted that at low magnification the reticle tends to be hard to see.
Tester D only had a chance to look at Premier, S&B and Nightforce in any detail. To be succinct, he thought that Nighforce is not in the same league while he would be happy to take S&B or Premier home with him (and he made a solid attempt to sneak one out forgetting that I know where he lives). On a more serious note, he really liked the color saturation and depth of field on both S&B and Premier. Nightforce looked bland to him.