I hear what you are saying @REDZULU2003 from a technical standpoint.
But from a functional standpoint, using the BM in a non-immersed environment(shower) benefits highly from the winevac usage. I simply cannot get that kind of pump/expansion without it.
So it’s not that he winevac is exceeding the capacity/design of the water pump. It’s more that it is unlocking the potential for me.
I would guess that’s why they added suction bulbs to the new versions.
Almost everyone who has bought a bathmate has bought a wine vac to modify it and it improves the bathmate tenfold. It’s a rather easy and inexpensive option if you can’t afford the handball. It gives much more vacuum then the handball but if you’re looking for convenience go with an extreme but if you’re looking for an inexpensive way to duplicate that the winevac modification is the way to go.