I recently got several pieces of triple ply cookware, including a 8 quart stockpot and a 4 quart saucepan (Tramontina, if it matters). I like them in theory, but the reality leaves a bit to be desired. They are incredibly slow to boil water. Like half an hour to bring up the 4 quart to a very gentle boil. I'm trying to treat them well, so I'm following the directions that came with the pot to use medium to medium high heat. Is it really a problem to use them on high? I'd like to continue to take good care of them, but I would also like to eat dinner at a reasonable hour!