Hey, a friend of mine (wink, wink) is having a little problem. His viagra isn't working anymore due to the meds he's on. Does anyone know of a good penis pump that might help him out? He saw one advertised on a late night TV program called the Pos-T-Vac, but when you go to their web site you find out they want over $400 for what looks like about $25 worth of hardware. I think for one to be effective, it would need to incorporate an elastic ring that slips over the base of the pump and onto the penis once erect. Beyond that, my friend is clueless. Can anyone offer any further advice???