All Clad is the professional's usual choice; 18/10 stainless, but it is very expensive. Sam's Club has a knockoff, under the Wolfgang Puck label, in 18/10 stainless that is 1/4 the price of All Clad. It's beautiful cookware that will last a lifetime. Depending on how your wife cooks will determine what kind of handles you need. If she sears meat in a pan atop the range then places it in the oven to finish cooking, be sure the handles are 450 degree oven safe. All Clad handles are 18/10.
Only buy one pan with a coating (Teflon, etc.) for frying eggs. Teflon inhibits proper carmelization when searing meats and fish.