Quills are great if you want to keep the classy vintage look, I myself prefer quills, but I use threadless ones as they're easier to source and hell a lot of options to choose from.
Edit: With the Mather frame, I'll stick with the quill stem. Cant see that having a threadless one ^_^
I do love that classy vintage look you speak of and have a beautiful hidden bolt stem in the parts bin, but something still draws me back to threadless
Quills are great if you want to keep the classy vintage look, I myself prefer quills, but I use threadless ones as they're easier to source and hell a lot of options to choose from.
Edit: With the Mather frame, I'll stick with the quill stem. Cant see that having a threadless one ^_^