I have been using four Vortex scopes for the last year or so. The Diamondback series is tough so far and has been very exact in tracking.
A Crossfire II 3-9x40 with the illuminated reticle has been my son's favorite on an AR. It has seen some rounds run through it!
A Viper 3-9x40 has been on several rifles and so far has been perfect in every way.
The real sleeper to me though has been the Viper PST 1-4x24 with the TMCQ illuminated reticle. It has been used on an AR for quite a bit, but has been on a 375AI for two Kodiak bear hunts and killed twice. On the first it was a bad scene following a huge bear into tight cover. I really like the reticle more every time I use it.
