I am looking to purchase my next pistol but have a few questions about in reference to my purchase. I intend to use this pistol for IDPA events and maybe some other competitive shooting events. I am new to competitive shooting (looking to get in it) but have shoot for close to 7 years. I have checked out the IDPA site and looked at their classes and understand they factor in the bullet caliber into the score? So here is my question: Would it be better to buy a 9mm 34 (w/softer recoil) or a 40cal 35? Looking for real world advise, since I have not been able to attend an event yet. Additional Factors - The 9mm would be cheaper to shoot and I know definately easier to control. - I already own a Glock 23C and love the gun, so mags could be used interchangeably, for which I need to buy more mags for. - I do not reload (Hopefully will in the future) so would buy store bought ammo. - I am looking to leave the pistol w/ factory parts also (or close to). - 40cal is definately better for self-defense if that situation would ever arise - 40cal barrel can be swapped out for 9mm, I understand this takes me out of some divisions though.