Well I am made to believe that the 40, is so powerful and over whelming. That just shouting at the bad guy that you have a 40 he will fall over near dead. Also that if you fire a 40 and miss, but get close say a few inches, it will create a fatal wound and drop the bad guy dead on the spot.

Seriously, the 40 is ok. I dont love it, it my least favorite round. Id rather shoot 9s or 45s. 40 has an odd funny recoil kinda like a rubber band snapping against your hand. Maybe I need to try 40 in a metal gun rather than plastic?

If you are mainly shooting paper, the 9 is a much better choice, for cost alone. It will still be a good defensive round with modern ammo.

As for price of ammo, in target rounds. Around here 50box of 9mm is still $9.99. 4tay is about about $14.99 for 50.

Try then both, see what you like best...