I am having trouble deciding which one of the three scope to choose for my long range project rifle. The three scopes I have it narrowed down to are: Leupold mark 4 4.5-14x40 LR/T Target w/ duplex for 759.99, The Sightron siii 6-24x50 with mildot for 806.99 or the Vortex Viper PST 4-16x50 with EBR-1 MOA for 699.99. The two main things I am looking for are quality clear glass and repeatable, reliable turrets. I would allow other choices but do not wish to spend over 800.00 dollars. Thanks for the help!