Yes sir, I bought a 3/16 wheel first to do 3/8s chain.... I liked it so much that I bought another one for the smaller chains; .325 and like-pro....
I mean I looked at it as an "investment", I rebuild and sell saws, and get some horrible looking chains.....I also have slowly started to start grinding chains for people(not making money at that just yet).... I heat my home with strictly wood, so even if I only grind my chains over the years, the wheels will pay for themselves....
I should add that I still do use and like the stone wheels.... I use a stone wheel for rakers, and I even still use the stone wheels for cutters.....you could use the stone wheels til you get the hang of it, then get CBN wheel if you want it!!!