Do you keep with the same mfg of your stones or do you have a mixed bag? I could see the cost advantages of going from lower cost/lower grit stones and as you progress up to say 8000 grit then you might consider looking for or have already purchased quality stones? I Don't think of going cheap on the lower grit stone would effect the end result, or would it?
Yes and no :
I started with a mixed bag chosen from experimentation.
Results = BRILLIANT ! ! ! (on most of the easier to sharpen alloys not the high vanadium blades). I was getting super easily produced near mirror (looks like a very impressive mirror unless you use jeweler's magnification).
and
Now . . .
a near full set of Shapton Pro stones from 120 to 15,000
Results = BRILLIANT ! ! ! same alloys maybe a tiny bit higher alloys maybe a hint cleaner mirror, stay flat longer.
For the high Vanadium alloys (S30V, 90V, 110V) I use a full set up DMT from 220 up to 8,000
Results = dang good
All are easily hair whittling.
NO STROPS
Cheep coarse stones ?
My mixed bag stones were : Norton 220 water stone = garbage; only good to prop the door open in sumer time. Way toooooo soft; I have never sharpened ANYTHING on it that seemed like the stone was suited to the purpose just like rubbing a hunk of metal on a chuck of firmly packed sand it just wears tooooo fast.
My other mixed bag coarse that TOTALLY saved my bacon when I got fed up with the Norton was DMT 10" 220 / 300 I still use it for reprofiling S110V and for flattening all my other stones all these years latter.
but
not cheep $100 plus
WORTH IT !!!
The Shapton Pro 120 (a white stone) is one of the best stones I own. The complete opposite of the Norton. It cuts for ever, stays flat feels great . . . just a gem of a sharpening stone.
I don't recall what it costs . . . I'm thinking ~$60
WORTH IT ! ! !
I don't know if I answered any of your questions but I had fun posting.