Timing Lights with advance any good?

I'm sure there are "some." I don't like 'em and won't use 'em. Degree your balancer or get some timing tape. Simple

In a previous life, I sold auto parts/ hardware and other products for 15 years. Part of what we did was to repair, or send in for repair, automotive tools and instruments. I've seen several delay lights that were simply NOT ACCURATE.