While I really like the upper end Vortex scopes, the diamond backs are not worth it. They have a ton of parallax and the glass is not great.

Take your pick, Leupold, Weaver, Burris in a 3-9 or 2-7. I have hunted mostly with 3-9s, but the 2-7s allow a tad more light and the lower mag is pretty nice for still hunting in the timber.

The Leupold VX-1 2-7 is a great choice and just over $200. The Burris FFII 2-7 Ballistic Plex E1 reticle is my personal choice at about $200.

If you want to push up in magnification, I would suggest you look at the Burris MTAC 3.5-10. It is about $450, but it is a great scope.

Burris is a Colorado company with a forever warranty on their scopes.