The Williams have a nice profile and little to snag on and once sighted in and tightened up are very secure. Great for hunting, truck gun etc. They are adjustable, but not as good as the Lyman and Redfields. If you plan on changing your point of hold, and don't need to adjust, the Williams is hard to beat. But, if you plan on adjusting during the match the Lymans and Redfields are better choices. Especially the old ones still in good shape, better quality and much tighter. New Lyman sights aren't anything to write home about, but are about the only choice.