We sell lots of these units and have found they are very quiet and reliable.  They are easy to clean and are well designed.

* Quick disconnect for fast, easy maintenance.
* Extra-large, easy-access Filter Media Baskets: complete with filter foam, micro-filtration pad and Bio-Chem Zorb^® advanced filtration media, ensures exceptional water quality and fish health.
* Multi-Stage Filtration with bypass-free circulation guarantees that all water flows through the filter media and not around it, ensuring a cleaner aquarium.
* Patented Anti-Airlock System allows self-priming, uninterrupted operation and prevents filter shutdown.
* Unique Sediment Chamber improves filter efficiency and reduces clogging.
* Large Rubber Base suppresses vibration and noise, providing quiet operation.