I change my lenses from Decot to Ranger and back again. My Decot frames are probably more than 40 years old. About 25 years ago, I won a set of Ranger frames at a shoot, still have them too. I have used them probably four days a week for the 40 and 25 years I have had them. Willieb, you could save some money by just replacing the ear pieces and using your old frames if they are in good shape.