I carried a G19 for about a year before I traded it for my current EDC which is now a SIG P6. I wanted the P6 over the G19 because with it being a single stack 9mm, it's easier for me to conceal under my clothes. If you have a friend who has the one you are considering, see if he will let you see how it feels and conceals.
Edit:: 2cool, that's some great trigger discipline there...
I got rid of my P6 becuase it was the same size (marginal thinner grip) and held quite a few less rounds than my Glock 19. it was an easy choice.