Then I'd heard about this small, free sculpting tool called Sculptris. The price was right so I figured, what the heck? I'll try it. And wow!-- It is easy and super friendly to use. The interface is extremely slim and unintimidating. The program isn't bogged down with a million different modes or tools. There are maybe 8-10 different hot-keys and two modes- sculpting and painting. And that's pretty much it. I was impressed with how it automatically adds tessellation when the sculpting needs it and you don't even need to think about how that works. It just does it. But it also lets you paint to reduce the topology if the mesh gets to be too dense to deal with. You'd still need to re-topologize the model to get a rig-able/animatable mesh from this, but then you need to do that with the other more expensive tools, too. Here's the first character head I made with Sculptris. I whipped this up in a couple hours today....
And a screen grab of the entire interface. This is literally it- no other windows, menus or tabs. Simplicity personified....