Heavy duty pots and pans are great, however they do have discoloration and things stick easy even when using not stick spray. Disappointed with that, and have already lost one pan that was completely ruined other two fry pans are discolored and I’m extremely upset about that. Have the warranty, but have been getting the run around to get them replaced! Paid a lot of money to have to just toss it out, and not get it replaced! But now 3 fry pans that are supposedly non-stick, is not true!!!