Just got a colt ar15 and got magpul rear sights but I want some good optics on it and my knowledge is nil in this case. I know I don't want a traditional 3x9 scope type setup. I kinda like the red dot scopes but their the first I googled. Any recommendations ?budget is around 200 bucks, though if it's better to save a few more months I can go up 500 bucks ish! Cash back at stores enables me to sneak the money past the wife firewall without having to answer a lot of questions with I want it ! Hahaha thanks!