Huge +1 here
Finishers all eventually come down to personal preference as you can see from reading here in just this one thread..
Getting the 1k-8k system locked in and performing on every razor is the key to honing... Some of us, like Ron and I believe, that tightening that up is the key to it...Not the only way , you could do more polishing as you go up instead, either way you want all the previous grit marks polished out...
Just keep in mind that setting the bevel, and getting to shave ready before the finishing stone, is the way to a smooth shave, and yes that pertains to the Coticule system too, you're just doing it on one stone instead...