I would go with the 400+800+3000 those are the three best NP stones IMOThanks for the reassurance.
Incidentally, it's time to replace my stones and I've been eyeing up the Naniwa Pro 400, 800 and 3000 as my set, also using it to sharpen / restore some of my other family knives as my skill level improves. From the reading I've done apparently there's little point going above a certain grit level for both stainless steel and powdered steel like (not sure why, would love to understand better).
With that in mind, what combination do you think would suit better?
Naniwa Pro 400+800+3000, or 400+1000+5000?
Any thoughts welcome.