Interesting questions. Interesting observations.

May I suggest that you try shooting 9X19 under simulated combat conditions (low light, no hearing protection, no eye protection, maybe inside a closed room or automobile, just like it will be when you need to defend yourself in the real world), then try the same exercises using .357 Sig. Let us know how that works out for you, okay? You like recoil, you like muzzle blast, you like mega-fountains of muzzle flash, you should really enjoy the experience.

Might even save a buck or two on ammo.