Better, better for what? The Williams type sits directly above the receiver, the Anschutz/Fwb/ HW types can extend back increasig the sight radius, which makes them inherently a little more accurate. I even have extension tubes on my Anschutz sights and Gehmann adjustable iris's installed, which really help. I also have a Gehmann iris on the WIlliams sight which sits on my old FWB 124d. The Williams is more compact, better for more sporting/hunting as it is less likely to snag on anything. The larger Anschutz or target types are better for target shooting, the adjustmens are probably finer, although am not sure, and generally more repeatable , at least with click adjustable models. I do have a couple of the Anschutz sights where the windeage is by push pull thumbscrews, so not repeatable at all, the click models are very good in that respect. Both types have click adjustable elevation and are easily repeatable.