FWIW, I just did one with 65% Vienna, 21% Munich 9L, 10% Pils, and 4% melanoidan IIRC.
Edit - Also, this one's on the light end of the color range. I believe it's 7.7 SRM.
The one I just won a silver with was:
Munich 10L 37.7%
Pilsner 30.2%
Vienna 22.6%
Caramunich III 7.5%
Melanoidan 1.9%
I think this year I'm lowering the Pils percentage and raising the Vienna and possibly the Munich.
Mine is similar but with a little more Pils and a little less Munich. Like you though, I keep turning the dial more toward Munich and away from Pils. In my mind it's more Marzen than Ofest, but I realize it's not a clear cut distinction. Either way, I tend to like it darker and richer. I want it very drinkable, but maybe by the half liter instead of the full liter