Smoke, because I am shooting in a fairly dark studio, I have complete control of light, I can adjust lights using a meter to give me a margin for black point and get inside clipping and can check it on the LR histogram and fine tune. I'm not as concerned about adjusting contrast because I have set it with my meter and can fine tune it in post. I want to avoid pulling back shadows and producing noise or having shadows too dark to print. I have determined at what black point my printer/paper combination produces detail so want to start inside that. I usually want detail in the kicker highlights and can both see it on the monitor and watch the r side of the histogram, taking into consideration there may be speculars off jewelry etc so checking the highlight warnings dials that in. One those are set, I have the best file to work with in post. I guess I could set the sliders to do that, but why start with a less than ideal file. If I was in a situation where I was going to just print the file, like at an event where it goes straight to the printer, adding saturation, sharpening, contrast in the profile applied as shot could save time. Just another tool handy to have. But starting with good color eliminates one issue and being able to nail it is just part of the equation. In shoot, as so many are, where your time is limited, I would take the first shot with the ccpp and adjust color in post. Heading into the studio now and will test. Re positioned my hair light aimed down more thinking it would help with flare (that I didn't even see) and I think I got a floor bounce that hit the shiny board on the floor, bounced up against the 11' white ceiling and took the face with no other lights on from nearly black to recognizable. Interesting. Hmm, will put a black sheet on the floor behind subject and see if that confirms it. Gotta love lighting.