Anyone have one? I've always had gold and platinum rings, but getting tired of them looking horrible after just a couple months of refinishing. So, are the TC rings as scratch and dent resistent as advertised? Is there a recommended method of manufacturing to look for when purchasing? I've read that cobalt is no-good as a binder and to look for TC that is bonded with nickel. Is this right? I'm looking at a couple of laser engraved rings to use everyday and keep the gold and platinum bands for more formal occasions. If you have one, let me know what ya think!