I would recomend a Bushnell Bantam, I have two one on a 50 one on a 54, I have been using one of them for a lot of years the one on the 50 is only about 6 years old.the magnification is only 2.5 but that suits me for hunting and they have a long eye relief which lets me use them at awakward angles,deer like to sneak up behind my stand. Lee