From my perspective, not knowing what your uses are etc:
If you’re currently happy with your NXS, I’d spend the money on ammo, etc
If you have a reason you’re considering updating optics, such as eyes getting worse, bored, just got a hankering for something new, etc, then my answer might be different.
If you dig your reticle and don’t have any problems with the NXS, I wouldn’t worry about it.