I have a paladin 390 gen I from atn and i shot 9 yotes with it last year. I am looking to upgrade my scope i can spend somewhere around 1500.00 maybee a little more. What do you think would be the best scope to upgrade to. I was looking at the M845 but i see it only comes in a 2 zoom. I usally only hunt over bait about 50 yards away.