I have the 3.5-18X50 and love it.The zero stop is great, the glass is great. But this is just my opinion. The one thing that seems to be a consensus on this forum is either you really like the IOR line up, or you really dislike them. There seems to be no middle ground. If you have the opportunity to get behind various makes and models of scopes that is what I would suggest then you can make a more informed purchase. I personally think you will not be disappointed.