In my perception, however, the filter is just fine. Easy to install (if not cover the edge of the pool locked).
Running noise can be virtually inaudible. You have to listen very carefully. Had been once the impeller of the pump clean. That was after about 3 months of operation, as distinct suction noises were heard. The disassembly, cleaning and re-commissioning were completed in less than 4 minutes.
The water quality seems to be ok. It is clear and the people are fine. Partial water change about every 4 weeks. The water is the way sufficiently ventilated. Not looking for additional outlets.
