Originally Posted by docwyte
Bar end weights and anti vibe inserts made a huge difference on my KTM 640 Adv.
I've got a pound of lead on each end of my 640's bars. It makes the vibes a bit worse at idle but they vanish above 3k.
So to answer the OP, whether you want more or less weight is going to depend on the bike and probably a bunch of other things like the kind of bars, bar mounts, etc.