We have had a large system at our Queensbury, NY operation since 2004. It produces incredibly clean water. I would agree it is more expensive and the tanks need to be large enough for the bacteria colony to eat your organics (soap and wax). It is so simple it's ridiculous. It needs surface area for the bacteria to grow on and air. A small blower bubbles air through the colony to encourage an aerobic colony which produce no odor. It is more or less exactly what your municipal sewer treatment plant does before dumping treated waste water into a river. No dangerous ozone. No flocculation required which some reclaim systems use to bring small particles together to make them heavy enough to settle out.
This reclaim system does not: Remove salt from water. Remove color from water. Reduce TDS (Total Dissolved Solids).
Our tunnel is roughly using 1/2 reclaim (25 gallons per car) and 1/2 fresh (25 gallons per car).