threadless stem converter
I would never use a threadless stem converter on a 1" threaded front end. Partially because I really don't like the look and partially because they're kind of the worst of both systems. I'm the type of guy to have 70mm or so of threadless spacers or a Technomic. A threadless convervter would either be unsafely flexy to achieve that or much heavier. I will admit to trying the Origin8 31.8 quil stem because modern bars are sooo much more comfortable to me.