I bought the K&S Balancer after a couple of books I read couldn''t say enough about it.

It is as close as a Dynamic balancer that We can get.

It ensure not only balance; but equal weight distributed in the correct place on each blade. This ensures a dynamically correct balance when the blades are actually spinning! If You put the blades on a regular balancer AFTER balancing on the K&S, it would say they were out of balance; but they are not!

You can even balance the blades on the chord line (correct term?) (from leading edge to trailing edge) but I haven''t gone that far!

Doesn''t take any longer than a reqular teeter-totter balancer; but FAR more accurate, which is almost mandatory for the 600 size helis; from what I understand.

My 450 has NO vibration and I can read fine print on it, if I dared. Probably overkill for the 450 size; but I''m anal (or very proud of My heli), however You want to look at it. Besides, I have learned to never say never, as now I''m admiring the T-REX 500

Gary