I don't own any of these, but a friend of mine has the Naughtibod and doesn't like it and talked me out of getting one. Apparently, there are some kinks that need to be worked out with the vibrations being totally dependent on the volume of the music. She needed to turn the volume all the way up to get the vibrations that she wanted which meant the music was too loud to keep the earbuds in, but if she took the earbuds out she couldn't hear the music over the motor of the vibrator. Not being able to hear the music seems to defeat the purpose of having an ipod compatible vibrato. less