I'm not talking stopping power, but I guess I'm looking for easy of ownership. As an example, if I'm looking at buying a subcompact XD9 or a subcompact XD40. Ammo price/availability? Recoil? Capacity (is the trade off worth it)? Weight (considering it would be used for CC)? In the same type of gun, would the grip sizes differ at all? Or if this is just stupid and absurd, and it's all completely up to individual taste, just say so. Thanks!