We have had the Copper Core 14 piece collection for 24 months and can not be more pleased!  We have owned other cook sets in the past but have found the best set for us. The collection provides a good variety of cookware and excellent results with even cooking and easy clean up.  We will occasionally use Bar Keeper Friend to polish up the pots and pans but it is easy to maintain them looking like new.  We cook 2 - 3 meals a day at home and look forward to many more great meals in the future.