Voted Naniwa.
My go to system is also naniwa but 1/3k is Chosera 5/10/12k are superstones, I finish on Jnats mainly. I have a few different Jnat finishers to accomodate as many steel varieties as possible.
Sometimes I use 4/8k norton instead of naniwas.
For some rare razors that do not respond very well to Jnats, I can finish on Coticule or Thuringian.

I have a 2 full Jnat progression after 3k Synthetic, a nagura progression and a 3 stone proigression, I use those only if I do not have to hone many razors because it is more time consuming.