I just asked a similar question and if I were to go with the tru glo it would be the Pro magnum series based on everything I saw out of the tru glo line it mounted the most securely, ( thanks Otis for the pics), however I wanted a ghost ring on the rear sight and I couldnt find out if the pro magnum had one or not so I went with the williams fire sights which I was able to get a ghost ring to add to the universal slugger and come out about the same price. Both look top notch and I bet both work well, I will let you know more when I get my rig set up with the williams stuff