I am requesting new pots and pans as part of a wedding registry - I already have a few nice pieces, so I don't plan to request a full set. Does anyone recommend one type over another? I plan on getting All Clad, and unfortunately, getting all in the copper clad will be too expensive. (However, I was thinking of getting one or two pieces in the copper clad - are there any pieces folks just can't live without?) Thanks for your advice!!!