I think I would look to Vortex before buying a Redfield. The Diamondback series is pretty comparable in price and Vortex builds quality scopes backed by a great warranty. Save a bit more and step into their Viper line and you can't go wrong. That's my opinion on the price range you are looking at.
If you do not need illumination, the Viper HS is a great hunting scope. 24 moa one turn in 1/2 moa inc, zero stop. Great scope when you have to dial dope on the quick.
I changed all my hunting rifles from Leupold Vari XIII a few years ago to the Vortex Viper. They have made me very happy with the optical clarity, tracking, and overall quality in them. Highly recommend them.