Stock forks, no emulators. I went straight from the stock (10w?) fork oil and springs, to Eibach springs and 10w, to the 20w when those seals blew, so I have no sense of anything in between; but I feel as if I can do much more in terms of off-road bumpiness than in stock form.
I think that the general ADVrider DR650 thread consensus is that 10w is best with emulators (or the Intiminators, which you've detailed why you don't like). I dunno, maybe you can take a spin on mine sometime and see what you think, if we ever find ourselves in the same county.
Stock to emulators is not a good comparison since the damping rates and curves differ.
Did you abandon the honda fork swap? Give the emulators a try. They work much better than the stock bits.
For me, 10W is significantly underdamped, especially on rebound. I find that suspension recommendations on the internet vary wildly due to terrain, riding style, and a fundamental lack of understanding of what the suspension should be doing. I went to 15W, then 20W and I think the sweet spot for me is somewhere in between.

