Trevor,

I'd advise to keep shooting on raw to keep your options open as long as possible. However, I think you've maybe misunderstood what a raw file is. It's the information that's collected from the sensor before the camera's software can do anything to it. In other words, tinkering with saturation, sharpening settings, etc, on the camera wont make any difference at all to your raw file. It will, however, make a difference to jpegs. What I do is shoot a raw file and a 10 mp jpeg at the same time. I have my settings set-up to give me the best possible jpeg. Most often I end up processing the raw file but sometimes the jpeg is fine "out of the box" and that always saves a bit of time.

Cheers,
Bruce