I bought all of the 'quiet' ones...
...comes of having tanks in the bedroom. It's like this:
Whispers don't, they wear out fast and the rebuild kit is half the price or more of a new filter because they won't sell you just the diaphragms. Talked to a rep and they allowed as their foreign quality control (read China) sucks. They do push some air.
My Dolphin is fairly quiet, expensive and doesn't push a lot of air. They do seem well built and made to last.
The Airpod is better than both. That being said, by the time you get to this price level you're better off going 'pro' and getting an Alita. For the price of tubing you can send air all over the place. I have an AL-15A and its running 15 sponge filters (10s and 20s) and has enough air left that I could probably add 6-12 more.
For around $100 you can not buy another air pump for ten years.