I have 2 NR bikes, for the period they were the most reliable, dependable and race-worthy although costly to procure.
When 1st gen Shimano DA indexing came out Campi was left behind and never considered by me again on a performance/price index.

That said my 70's NR tech just keeps working and my Record hubs are my smoothest after decades of service.
It's just bicycle parts.

-Bandera