There are no way to predict this vibes thing - I am with Robmoto.
On my SR43 before Husaberg forks and alloy bar vibes were worse than after. Then I installed ex-Benelli exhaust and it was better for me (but people in direct "line of fire" behind me on rideouts complained on low-tone "boom" sound).
Then I done some work on motor and suddenly vibes got worse.
Then I filled bar with silicone and vibes got lower frequency.
On my new bike - Tiger 800XC, which is very smooth machine it went same way.
Original - no vibes that even draw my attention.
Installed Barkbusters - no problems.
Installed LeoVince can - no problems
Installed Rox Raisers - in 6th gear from 115 to 125 kmph vibes are impossible to accept, high frequency hand numbing.
Installed Barkbusters bar weights - problem gone.
At same time plenty of Tiger owners have same barkbusters and Rox risers and no problems.
Individual balancing of secondary vibes very from bike to bike a lot.
One thing for sure - always get rid of high-frequency, those are most harmful to your arms and nerves. To lower frequency you need to have solid mount bar weights, to lower amplitude - say rubber mounted weights...something like that.