"Old guys tend to say it like it is." squire
I find Lot 40 to be an excellent 100% rye. The taste differences between the 100% rye WhistlePig or Masterson's - as compared to the 100% Lot 40 - shows the skill and art of the blender/distiller.
Since I'm in MI, across the river from Windsor, Ont., I can fairly easily pop across the border and pick up a bottle for ~ US $40. I'm glad to see that it's now distributed in the U.S. (at least, in some states), but unfortunately at a much higher price point (~$60).
I'll go with the 90/10 recipe, the important thing being it's all rye.
We're Bourbon Geeks, it's who we are, it's what we do.