Troul 

Any one have experience with "VGEBY", "Bibike" or "YBN" brands for 12 speed chains?
The cost of them are about $25 less than the name brands & are also available (next day free shipping usually) & the reviews (for what they're worth) show decent reviews.

Has anyone did a blog to review them?

DaveSSS 

I've got no info for you on off brand 12 speed chains, but I have used Campy, shimano xt and sram force axs chains. Force axs chains worked great on my Campy 12 and sram axs drivetrains. They only cost $35 each. They are also very quiet and seem to wear well.

The shimano xt chain that I tried recently didn't work well with my sram axs drivetrain, so I took it off after 100 miles. They would probably work with a Campy 12 drivetrain and certainly the new Shimano 12 speed road drivetrains.

Sy Reene

You may have seen these from ZeroFriction. No YBN 12s chains included, but I guess their 11s chains do pretty well if you want to hazard the conclusion that their 12s chains are just as good. Though KMC doesn't seem to follow this logic with their 12s not so good vs their 11s offerings.

Canker