Pretty much what the title states. Sound is a big turn-on for me so I'd love to find an onahole that sounds loud and sloppy. My one caveat is that I'd prefer something really soft, as I have a very sensitive member and can't take any rough play. My preferred level of hardness is around Tomax Very Soft/Puni Ana 1000 level.

All that being said, what's the one onahole in your collection that you need to make sure the neighbors aren't home for, before going to town on?