About 1.5 years ago I purchased the American Standard SmartValve in all five of my home's toilets. Figured it was a good brand, and they had a 5 year warranty.
Some months ago I had to replace one due to overfilling. Now I find I must replace two others for the same problem. I'm willing to replace all five units again, but not if I have to go through this in another year or so.
What is the best, longest lasting toilet repair kit out there? I don't necessarily need whisper-quiet, as long as it fills quickly.