This has been a painstaking question for me for almost a year now. Last year I helped my dad sight in his pentax scope on his 11-87 and I thought the optics were awesome. My eyes are starting to get worse every year in fact I got a stronger prescription last month but I can't pull the trigger on a scope for myself. I have had great success with my tru-glo sights. I also feel why fix what is not broke so until I have a probelm seeing the tru-sights down my barrel I think I will stick with what I have.