For a fully stainless steel kitchen, these are great to have around.  We had no issues with the non-stick as you must keep it on or close to a medium heat and oiled up.  We've cooked some chicken, eggs, stir fry, you name it.  My only issue is that food doesn't "glide" across the pan (because of the raised rings).  It's really not a huge issue, but makes cooking with them somewhat of a learning curve.  Eggs will form to the pan as well giving a circular pattern on their bottoms.  These pans are interesting, but definitely a treat to cook with if used properly.