I've thought of All Clad, but yikes! It's so expensive!
I was given a small pot of All Clad when I got married. It was the best piece of cookware I had ever used. I watched the local high end store (no internet then) for sales and specials and would save my money just to get a piece of it. One day my DH surprised me with a complete set of it when he got a bonus at his job.
The seven piece set is about $730 on Amazon. The copper core 5 ply. If young I would say buy it, it will be the best buy for the rest of your cooking life. If your big cooking days are mostly in the past then I wouldn't invest in it, just buy a couple of pieces.