I've got the Napoleons from newbonneville.com. $31.95 a pop, black or chrome. The mirrors do a better job than the stalk mount stock ones. They also ratchet around for storage, or I've seen some guys run them low underneath the handlebars. I have noticed that the black is less black than it once was, so I would consider the chrome if I did it again.
The mirror mounts extend maybe 2" inside the handlebars. With my stock TB handlebars there was a threaded plate just inside the ends of the bars, so something would have to be done about that if you are running the stock bars and they have the same insides. I had changed to aftermarket bars which were hollow so the mirrors were extremely easy to mount.
There are some other nice options, such as the CRG's, but they are quite a bit more money.
