I have a large assortment of NC Star, I can tell you that the 10-40x50 Mildot Mark III are very good. I have one on my savage bull barrel .22, Rem 700 VSSF .308, savage BVSS .233
I also have gone back and forth with 8-32x50 AOE Mildot on .223 but prefer the side adjust for varmint hunting.
I have used my VSSF with NCStar optic to shoot Fclass in Gagetown, Dan C. was spotting me, and I can tell you nothing wrong with those particular variations.
I don't particularly like the red dot, or the smaller fixed 6x scopes as their adjustments seem finicky, and my large red dot cracked internally when mounted on a shotgun.
The 3x9 isn't great for .22 as you can't adjust the clarity at close in objects, it is better to mount something with an adjustable focus. I have it mounted on my AR and it works well.
If I were to recommend an NC Star I would stick with that larger Mark III's with 6x24x40 or 50, or 8x32x50, 10x40x50 as they are tactical, great clicking no problems constantly adjusting, though the setting on the highest power doesn't have the same clarity or results that the big named producers such as burris, leupold, nikon, or nightforce. For the price you will get a better than average shooting optic that has a lifetime warranty.
Cheers, and good hunting.
Jake