I assume you mean in the secondary market... The ATACR has been our best selling scope model this year. Last year, it was S&B. They are well performing world-class scopes and perhaps the pervasiveness in the market means you see more. I know of nothing negative about them. The 1-8x and the 7-35x are best sellers in their market, and the mid and longer range models are selling steady, and all perform fantastically.
From a resale standpoint, I think NF holds it value better than most.