I have had, and do have, many types. My Rena is not as quiet as I would like. But it does a good job pumping air. I suspend all my pumps from a rack along the back of the stand - so that they hang in mid-air and do not rest on anything. This cuts down of the vibration noise.
I just got a new Whisper 100, - the new design. It is blue and looks kinda like a flying squirrel's body shape when their legs are outstretches kind of arches and standing on its toes. It is a brand new design and I am very very impressed with the thing. It has been substantially quieter than any other pump I have had in some time - and has remained quiet for the 6 weeks I have owned it. IT is not even suspended.
I think the design is a great improvement over their old ones.