I don't shoot competitively. I just shoot with friends on my private range out to 800 yards. But I want good glass. I'm looking at either the Nightforce NXS 5.5-22x50 and the US Optics ST-10. I'm currently using a SS 10x. 10x is plenty for what I'm doing but I think the ability of having variable power would be nice. Is the glass on the ST-10 going to be that much better than the NXS to not have the variable power feature?