Make sure the bumps in the front of a G19 fit your hand size. I wanted a 17, my daughter liked the fit of the 19 (G3). I wish I'd baught the 17, NOT the 19.
The grip doesn't fit my hand, and I don't have large hands. I carry a XD9sc (love it) and with a good belt and holster could carry the 17 just as well.
All said and done I'd rather have my CZ 75 Comp PCR back, than either the sc or the Glock..