Ok here is a post i have lots of expirence in. I have owned 4 NCstar scopes.
Low power ones-Every bit as good as anything out there. High power,they get a little hazey. The big difference in NCStar or any other less costly scope is the tracking. Big dollar scopes-Track very nice,cheap ones,Kinda track up and to the side at the same time.
I have a 6-24x56 mil dot NCStar on my 223. Zeroed at 200 yards. One mil dot down-dead on at 300 yards.One mil dot up-dead on at 100 yards.
As long as you sight it in and then use hold over,they shine like all others.
clarity is more than good enough (to my 51 year old eyes).
As i say-The biggest thing is the tracking,but if you sight in and use hold over your good to go. Mine has held perfect zero for 3 years now. Never had a issue with it.