Well, it's important to take into account how your stack compares to the blinds and antes. If you aren't comfortable, you have to consider stealing. You should also consider stealing as a larger stack "leaning" on the smaller stacks.
I suggest reviewing Dan Harrington's "M" values explained in his book, Harrington on Hold'Em Vol. 2. He directly addresses this question and raises interesting situations. HOH v.2 is my second favorite book.
GL.