I'm looking for an upgrade to put on my Marlin 30-30 and would like something with a relatively close range magnification (1.5-5x, 2-7x) yet stay around $100-150. I have heard the new Redfields click adjustments are sometimes loose and some say they are good in low light. I have also heard the opposite. The prostaff seems to be a good deal too. Other suggestions are appreciated.