Most people here on EF know the difference between a "buzzy" and a "rumbly" vibration. However, most toy manufacturers don't disclose the frequency of the vibrating product. I know Lelo does, but they're rather rare in this aspect of disclosing. I tried an electrostim, and I could adjust the frequency of the stimulation from the controller (how cool is that?)
If you know the frequency of vibrations of your toys, what frequency(ies) do you like best?
For reference, I find 120Hz to be "rumbly," 130Hz to be "buzzy," and anything below 110Hz to be like slower rumbles.