I do the same thing as Travis, but don't let Bandsaw get out of hand. I made that mistake on my first human head. It's better to use Bandsaw in the very beginning, then use the Knife and Split tools to add more precise detail to the model. For example, instead of using Bandsaw for adding detail to the nose (which will split all the polys to the back of the head, just use the Knife tool to split up the nose.