It's all well and good asking about what scope you should use or buy, BUT... You have to figure out what you really want the scope to do and what is your expense limit. With that information nailed down there is only ONE WAY to determine which scope is best for you and that is to go out and look at and through them. I thought I had my scope purchase nailed down once until I looked through a Nightforce and all bets were off after that. I didn't want to spend that much money on a scope, but the difference between what I initially thought was a good scope and the Nightforce was simply amazing. Since buying my first Nightforce I have purchased another one and I couldn't be happier. I use the 15-55 Competition and it does everything I need for benchrest shooting with no added bells or whistles. Good Luck on your decision.
Rick H.
Rick H.