Oils, or Acrylics?... That is the question for today...

For this: http://stickypawz.timduru.org/Art/01JemDrkMan.htm

I am at the point where I am ready to do the under painting, but I can't decide which medium to use. Oils take longer, but are more versatile and luminous. Acrylics are much much faster, and I am currently more practiced with them; however, I am running low on Acrylics.

What to do? What to do?

Ryngs