Sounding is probably one of my favorite activities besides anal play and medical. I enjoy feeling the sensation of the sound sliding down. The only aspect of sounding that I don't really enjoy is e-stimulation. It is probably due to the fact the first time the e-stim seemed to be bouncing the shock and not being consistent. I recall that one minute I would feel it mildly then the next time it would hit me hard enough to the point I would have to grimace in pain. It remained so inconsistent even though the wave that was selected was more of a constant repetitive type. One pro-domme I am currently seeing has used various things including a tuning fork while doing sounding. I honestly enjoy watching bigger sounds being inserted gradually. When I think I couldn't take a larger one, I soon discover that "yup that one fits too". I've often had some residual discomfort but thats usually caused by the depth of the insertion.