Product review (5 stars): perfect and just a great as OEM
perfect and just a great as OEM.  watchout for cheaper brands. I made the mistake of saving a couple of bucks on 'ACE' filters, all three of them leaked at the connection. I have switched back to these WSS-1. and make certain you use a very light coating of the 'O-ring' lubricant for a professional seal. And only on the rubber O-ring, don't leave any behind on the plastic housing, and especially away from the openings. If the lubricant gets into your water supply, it won't harm you, but it does make water taste odd.  I also found that if after installing, I cycling the water out of it (which means enough to flush the interior water holding tank) this guarantees you of no taste perception issues.