19 and 26. The width of the Shield makes it better for carry, but the 26 (with extended mag) fits my hand better and is nicer to shoot. That, along with the commonality of mags with the 19 makes it the winner in the subcompact race.
Another vote for the G26 and G19, with one caveat. If you felt you just had to have a pocket pistol, you could keep the LCP with the G26. G26 conceals really well IWB (my EDC) so it could do double duty as HD pistol and concealment pistol on non-pocket days. I am a Floridian who conceals a G26 in all weather, though, so it can be done.