Bests & Worsts Reviews from Amazon

I purchased a Korky Quietfill valve about 2 months ago and installed it following the instructions. After about 3 weeks I noticed the valve would continue to run ever so slightly even after it should have shut off. The running water sound was not a problem with the flapper because it was also brand new. Water was running into the overflow tube indicating the issue is definitely with the valve. I should mention the second toilet in my house is a Toto. Toto uses the same valve as the Korky (Lavelle Industries). I've owned the Toto for 6 years and have had to replace the fill cap on the toilet valve twice. When the fill cap starts to fail on a Korky it will cause water to still trickle through the valve which was exactly the same symptoms I was having with this new valve. Thinking my new Quietfill valve perhaps had a defective fill cap I went out and bought a replacement cap at Lowes. Replacing it returned the valve to normal operation but only for a short time. After several flushes I noticed the valve was once again still running. I tried emailing Korky's customer service but didn't get much help from them. They just told me to insure the fill cap was securely tightened on top of the valve, which it was. They offered no explanation as to how or why a brand new Quietfill valve would be exhibiting this type of problem. In an effort to see if something else might be causing the issue I removed the valve from the toilet, disassembled it to insure no debris were clogging it, checked the adjustment, and reinstalled it. After 3 flushes the problem returned. Rather than mess with this thing any further I returned to the store today and picked up an MJSI Hydroclean 660 valve. It's an updated design of the FluidMaster. The old Fluidmaster I had in my toilet ran reliably for 10 years without a single issue. I never had to replace ANY parts on it. Should've stuck with them to begin with. Having had experience now with 2 Korky valves I can say I just don't trust them. Nothing worse than leaving your house for an extended period only to discover your toilet valve has been running the entire time wasting water and possibly causing water damage to your home. Korky still has a way to go to make a reliable product in my opinion. .