I also prefer the first. It has the least yellow, and the contrast I most prefer. It looks like it also has the saturation cranked somewhat, though, so while it's not the most natural to my eyes it IS my favorite. #2 seems to have a green push, which makes it look sickly to me. #4 is the most natural, to my eyes.
That said, all of our monitors are likely calibrated differently. I use mine to edit photos occasionally, so I tried to calibrate it as close to neutral as I could.