Quill stems still look fine to me, and so do threadless stems.

I prefer the latter for lung-bursting climbing and sprinting, though. I'm no strongman, but I can feel the torsional flexing in svelte aluminum quill stems when I'm really honking on the bars.

Threads asking "How do I remove my stuck quill stem wedge from the bottom of the steerer tube?" come up once or twice a year on Bike Forums. And while a few of my bikes with quill stems developed so-called indexed headset problems, none of my (high-mileage) bikes with threadless headsets have.

For some reason, I love looking at the Kore stem on my main fixed-gear bike. Looks the business.

(Not my photo: borrowed from a current eBay auction.)