Would you sell your S&W 60-4 for a newer S&W 60 .357 model? I can get a great deal on a new one and have the ability to use .357 if I choose. Any pro's or cons? I can sell the 60-4 and my LGS has the newer .357 on sale for $590, less 20% for a Memorial day savings. Figure I could sell the 60-4 for $570-$650 and pocket a small profit. What do ya think???? I am not really a collector and do shoot the 60-4 often.Thanks for you input in advance.