RockAndSage
WKR
To me if your at a full size grip go with the C.
I see no point to the full size cs grip (didn’t even know it existed yesterday).
Agree. The only thing that might make a difference is if you wanted a longer sight-radius for irons, but a shorter grip for concealed...in that case, a compact-grip C might make a little sense. But it's kind of a small difference. For some people, there also might be enough difference in the recoil impulse between the C and CS to matter too, if they shot them, as apparently the CS is sprung differently than the C, with the dual-spring system, IIRC.
In my mind though, it makes more sense to think of the CS as the Officer's equivalent, short and compact, and the C as the Commander as a concealable but more all-around gun, G19-ish in size. Then again though, people like choice, so there's that...