Has anyone used any of the nikon pro staff 5 series. I see they come in a 2.5x10x40 and 3.5x14x40. was just wondering how they worked in the field, I need to get a new piece of glass for a deer rifle up in PA and i heard they were durable and quality for the cost. I dont really want to spend more then $400 so thats why i was looking toward this. Any insight would help. Its going on a savage 111 in .270 we shoot anywhere from 50yds out to about 750yds. and its not always the most well lit area