Shimano BB-RS500 PB and Dura Ace BB92-41B press fit bottom bracket

[Cyclejoy]

Hi All,
New to the forum and would like to hear any member's views/experience of the comparison between Shimano BB-RS500 PB and Dura Ace BB92-41B press fit bottom brackets............worth the upgrade ?

Cheers
Cyclejoy

[gxaustin]

My Ultegra BB (no idea of the Shimano designation) has lasted over 20,000 miles. The previous one lasted 16,000.