Have a CF2 6-18x44 ao and a Viper 6.5-20x40 sf. Very impressed with both so far.
I am currently looking at the Diamondback 4-12x40 ao for a springer airgun. They seem to have a good reputation for durability from what I have read and parallax adjusts down to 10yds. They are on sale right now at one of the larger retailers but need to be back-ordered.
