I have used all 3 stages of Filtrete sink filters and found that the 3US-MAX-F01 simply did not have enough water pressure to be used in combination with a kitchen sink. It's not terrible to fill a jar or pot, but it's *terrible* trying to clean something with a cold water spray bottle — even trying to spray food down a disposer. What should be water jets becomes more of a rain shower and I have to use hot water even if I don't want to get enough pressure. I found the 3us-af01 filter (default) still offered *just* enough pressure that you barely noticed there was a filter in the line. At least he was rid of the bad aftertaste, if not more. I have a drinking water fridge filter that solves most of the other problems. Unfortunately they seem to have basically discontinued the default filter as it is nowhere available and some 3rd party brands I tried were loose and rattling inside. to the point that I have returned them, so I'm afraid I may have to replace the system entirely if I can't get a good replacement for a non-advanced or non-max filter that gives me water pressure again.
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