Danny Bee belt drives are pretty slick also. The ease of adjustability is pretty sweet. You can even have a slightly different timing spec for specific tracks if you want. I'm not sure on the SBC but on the FE Danny Bee set up the belt is in plain view and can be checked periodically. None of them are less than $1k so it is a big leap from a quality chain in price for sure.
I've looked into them just haven't justified the cost yet. Yet
