I'm looking to get a vibrating masturbator but I don't know which is the best. Does anyone have any experience with these? Does vibration work as well on men as it does on women, or do you still need to stroke up and down to get off? How noisey are these things? I wouldn't want my housemate to know what I was up to. Preferably it wouldn't look like a rubber pussy either, so that I didn't have to hide it away. Thanks for your help.