I had the NXS 2.5-10x42 with capped turrets and MOAR reticle and now have the SHV. I sold the NXS years back for various reasons which don't make sense now, but now have the SHV.
I think the SHV and NXS are the same in terms of optics. They are both mediocre when compared against my S&B, but they are more than sufficient for hunting. This past week I was using the scope out to 600yds on wallabies no problem.
I use my binoculars for spotting and the scope to take the shot so absolute clarity and perfect color is not really a concern. People get wound up about this stuff. What is more important is will the thing hold zero and dial correctly every time.
The biggest issue with the SHV is that it does not have a zero stop. You must be very sure you know how many turns it is to zero if you go more than one up. There are index lines, but they are small and it's hard to be precise. I under-dialed my scope this week by accident and was 10 MOA low on an easy 300 yard shot and missed. I figured out what happened, but it was annoying. After that I was hyper aware of where I was on the dial and wrote on a piece of tape inside the top cap what turn index number is zero just to be sure.
However for a set and forget scope the SHV is good. It is compact and feels very well built. I trust NF not to go bad on me when going in out of vehicles, on quads, in rain, etc. when hunting. My rifle tipped over and banged the windage knob on a rock when glassing and I didn't worry about it with the NF. I just know it will work and that to me is worth it. Same when the rain came in. I just didn't need to think about it and just focused on looking for animals.
Now is the NXS worth 2X more than the SHV? I don't know about that. If they still had the capped versions I'd have gotten the NXS, but for me the SHV is fine and the price is good for the quality. I feel the scope can take abuse vs. what I was using on my rifles.