9mm will do just fine. without the right shot placement, neither is going to stop the hog. if you want a cz that packs a bigger punch, look at the 97b. it's a 45.
Favorite range gun for the money - CZ 75B or STI Spartan V 9mm
Go-to carry setup - Walther PPS or PPQ in FIST kydex holster 1AK
Favorite semi-auto design - HK P7
"A Sig is like a lightsaber - not as clumsy or random as a Glock."