I have been enjoying water from the undercounter 3 filter system for about 2 months now. The taste is very clean. I have been drinking filtered water for decades from various systems including RO and I can truly say this filter is top notch. NO after taste. It really does compare to the taste of spring water. Thank you Igor for your assistance by phone in helping us to get the water flowing after we hooked it up. I highly recommend this filter- in my opinion, it is the best. I also appreciated the great customer service.