Originally Posted by timcupery
The flipside is that stems with a bit of flex...... are a bit more comfortable on the hands. Don't go around looking for much suspension in your threadless stem, though, unless it was designed for that purpose and has springs
I have bikes with both threaded and threadless stems/headsets/forks including two that came threaded and were converted to threadless late in life. If there is any difference in comfort due to the headset/stem/fork type, I sure can't feel it.