I have seen the feel does and have heard nothing but good things about them, except for one thing and that is that even though it is said or claimed to not need a strap on harness, it in fact does work a bit better with one. My question is, has any one had more success with any one specific strap on harness then another for the feeldoe? Or do they all work fairly well, if one is truly needed at all? thanks for the anticipated input! Play Safe!