I am looking for a general purpose hunting scope to put on a bolt action 30-06 rifle with a 24" barrel. I am looking at the Burris 2.5x10x44 Black Diamond and the IOR Valdada 2.5x10x42 Hunting scope. Both are in the $500-$600 dollar range. In your opinion which is the better scope in terms of optical quality, ruggedness and customer service. Are there any other scopes that you can recommend in this price range and quality level, or a little bit higher, maybe something from the sample list? Thanks for the input.