Steel has always been my favourite, and that’s cos’ steel is real.
Judging from these posts on r/BicyclingCirclejerk, I think everyone is also drinking from the same pipe. 

Personally, I fav’ KMC track and s/s chains.
Robust. Affordable. Easy to maintain.

I’ve been running them for a while and they slick good as ever.
So link up some steel if that carbon belt drive chops off and falls.