Again, this is just my opinion! Since you really need the best, polished bevel you can get, buy a CBN wheel to do that; 180 grit is the one. Use a Norton white wheel for your grinding and the CBN wheel to polish the bevel. The thing is, a well polished bevel will last longer than you would expect and it's easier to freshen than you'd believe.
They are expensive. I have the big ones, and the 180 grit has the rounded edges; not necessary, but a nice feature. The point about the money is the same as buying tools; basically, you get what you pay for. Buy Cheap, Get Cheap. If you get an inexpensive wheel, you'll replace it over and over. If you get a CBN wheel, you NEVER replace it. In that regard, ALL the other wheels are more expensive!
Hope that muddies up your waters. Get the CBN wheel(s). You won't be sorry.