Won't matter if its a Durabond, F-M, Clevite, or King on the box. It'll be a Durabond bearing inside. Odds are that this was simply a defective run of parts, and another normal set would be fine. Durabond does sell a performance line, where they run a steel roller around the I.D. to increase the density of the babbitt - I suppose those might be incrementally better. Or you might try the ACL parts which are made in Australia - I think they are the only true alternative.