Just a thought, but I've heard a lot of good reviews for the primary arms red dot sights. You could get the reddot and 3x or 6x magnifier for under 200.
http://www.primaryarms.com/Primary_Arms_M3_Style_Red_Dot_p/primary arms m3.htm
http://www.primaryarms.com/Primary_Arms_M3_Style_Red_Dot_p/primary arms m3.htm