Whoa! Tough crowd. :>
Well, all I can see is threadless is a bit lighter -- and of course, more modern. I was told that I could run any stem I wanted with threadless (1-inch) that is.
Of course, the fork the LBS wants to set me up with is $300-$400, not allowing the fact the fork I now have my Paramount is a very nice straight blade carbon fork.
If I didn't go the threadless route, all I'd really need is a new stem as the Serotta Ti stem I now have on my bike is just too long. Any ideas where I can get a good lightweight Ti or Al stem?