I just asked a guy this the other day and the conclusion of my advising senior men is that sealed is the only way and check tesile strength and if you buy a gold chain it's there better level of performance ... They concluded that there is so many choices out now who can try them all??? They had me buy EK gold Xring with a tensile strength of 8050lbs it cost me around $116 for 130 links of 520 because I have a plus six swinger and a OEM is I think 92 links? I hope this helps and I almost bought the 3-D chain lol twice as much money just for cosmetics ...