I like the threaded look sometimes, too, but I can't say I'd go about kludging one onto a frame with a 1 1/4 headtube.

That said, the least horrible solution (the Soma Quill-inator looks so much uglier to me than a threadless stem) is to use reducing shims to take your headtube down from 1 1/4 to 1". You will also need a new threaded headset, new fork, and if you have 31.8 OD handlebars, new handle bars. Sounds like a lot of cash for an aesthetic kick. Maybe get something like this VO Tall-Stack Stem, 1-1/8" - Threadless Stems - Stems - Components .