BT: The mirrors that Triumph shipped with my bike were really, really similar to H**** CB750 mirrors, but with wide-angle glass. The Buells are almost the same, but done in a black chrome finish.
Agawam: There is a helmet with a rear-view optical system built in. It's called the Reevu, & here's a
review
. (Thanks, but I'll stick with my mirrors for now.)
I haven't tried bar ends 'cause I ride in NYC & can't stand the thought of making the bars any wider than they already are. I don't need to be replacing mirrors every time traffic gets nasty...
Cheers,
-Kit