In that price range, Vortex Viper HS-T. I have an HS-T in 6-24x50 it is a great scope and has the features that I want.

Of those mentioned I've had Sightron, Burris, Bushnell, Nikon and Redfield. Still have a Bushnell, a Sightron and several Nikon Monarchs.

They all make decent scopes, if Vortex is calling to you, go for it. I have had, or know some one who has had all of them crap out on them. I had a Sightron SIII crap out on an elk hunt in Montana, but I still own a Sightron. They are man made mechanical devices and any one of them has the potential of crapping out. Vortex may have a better warranty, but they are all pretty good in that regard as well.

Go with the one that has the features you want.