I'd choose the P228/229 for one reason... the finger grooves on the 3rd gen G19 annoy the holy hell out of me. I have large hands and fat fingers, and I can NOT get a comfortable grip on the 19/23/32. The 17 fits me ok, but the 19 is just horribly uncomfortable in hand. I know you have the larger sizes of both guns, but i would rent both the 19 and 228 and see how they feel in hand while shooting. You may not be as large as I am and the grips may not affect you like they do me. The grips are a little different then the big brothers, so this may be a deciding factor for you. Just my advice.
JR
JR