In this beehive comparison video, it is easy to see how much less harmonic the beehive spring has as well as how little the beehive spring bounces and floats at higher RPM than a comparable dual spring setup.  This video is provided by PAC Racing Springs. In this high speed video of their in-house dynamics testing utilizing a high performance SpinTron tester you can see the performance of a single beehive spring is comparable to that of a dual spring in performance street applications. The visual analysis is a useful tool to detect dynamic behavior of valve train.