Quote: "by the way, what program(s) do you use for modeling / rigging / texturing?"
I personally started with Gamespace couple of years ago and I switched to Lightwave to have better uv-mapping, rendering and animation tools for a still affordable price, while tools like Maya and 3ds max were out of my range.
Later the original makers of Lightwave founded their own company and made the new 3d tool called modo, and I also bought this one.
The models for this texture pack have been made in modo. The reason is: modo has the best modelling and unwrapping tools and baking of textures is absolutely easy compared to other applications.
I also have licenses of ZBrush and Bodypaint, but I use them only for organic modelling.
Models, Textures, Sky Cubes and Games at www.dexsoft-games.com