I have an AR-50 that likes to eat the cheap scopes I have been feeding it until I can afford a better one (now). Would like to start shooting out to 500yds +. I see that some Barretts come with Bushnell Elite 3200s, but I am not crazy about the 3" eye relief (I am partial to the current configuration of my eyebrows and nose). I am looking for a Variable power (6-20/24/30) scope in the $400-$600 range. Any advice on this subject would be great.