Put me in the low-power, big field of view category. Most of my calling is in small fields, clearcuts, brushy areas, etc. In my area, with my hunting style, and in my opinion, the 204 ruger with VERY low power scope is the perfect calling combo. I have been really happy with the "turkey style" reticles for my situation: incredibly fast on target. The very flat shooting 204 doesn't require "how much holdover" guessing and 5x or 6x is plenty for long shots at coyotes. My scope will very seldom get moved above 1.5x or 2x in a calling situation.
This holds true with any of the small, flat-shooting calibers, not just the 204, imo.