It's always tiring to hear the 40 (or whatever) is better than 9 comments...
And I add that the 380 you will carry beats the hell out of the 45 back at home that was too heavy/hot/uncomfortable...
I have pretty much a sub compact 9 and it's still a chunk to haul around after a while. I don't know how the mall commandos do it with a 45, back up 38, extra mags, speed loaders, 5 led flashlight, 2 tactical folders, pepper spray.....Concealing makes it suck IMO.