[quote="Khaopaat"]My Calphalon pieces are going strong after 15 years of daily abuse. I think it's safe to say you can't go wrong either way.
You probably have the old NSF approved "Commercial Line" which was Calphalon's premium range back then. I have several pieces, and they are incredible and going strong. There is little if any difference in quality and performance to the All Clad Ltd that I bought four years ago.
That being said, Calphalon's new premium range (Calphalon One) is a shadow of the former. I cooked with a few of a friend's pieces once and was ready to launch them off the back deck. I'm not even sure if it's still made in Toledo (like the old Commercial line was) or has already been outsourced to a Chinese factory.
OP should spend the extra and get All Clad.
60% of the time, I work EVERY time!