Specifically their sights. They make sights that have features I really like such as plain black rears with a U notch, serrations, and a ledge style.
Trijicons and Meprolights seem to be the most common ones available locally to me and I personally do not like either (though would not hesitate to recommend for others if they like them). Ameriglo has a few designs I like though I have never seen them local. There are also a couple each from Heinie and Warren that I like but again have never seen them locally. None of them are better than 10-8 in my opinion.
Their other stuff (1911 parts, grips, etc) seem good quality but I agree, there are plenty of other options there... just not when it comes to sights (for me).