There's definitely been an improvement in chains. One obvious is the side plates insides having a chamfer. Smooths out shifting and quieter.

Since this is C&V and for some older bikes, I like to keep the original period type but that's not too easy and can get pricey. Wish there was a maker who would replicate some of the popular type of the days. I've also experienced quality chains but with inferior master links. On some bikes, I don't use a master link.