After much help from this site, I have ordered a new induction cooktop -- unfortunately the magnet test shows that most of my cookware won't work with it. I don't want to spend a fortune, so am now looking seriously at purchasing tramontina 3-ply 18/10 stainless steel. Walmart has a nice starter set and Sam's Club used to have one that is similar but about $50 higher which they call "premium". You can still get this premium set on Amazon. Does anybody know if there is really real difference? The different descriptions unfortunately are not backed up with specifications. Thanks so much for your help.