Primarily

Blender and Wings for Modeling

Mudbox and Blender for sculpting

Mudbox for texture painting and map baking

Blender and Mudbox retopo

Arrowhead 42... I know you do a lot of your modeling in Wings. I'm puzzled why you don't use it for UV mapping. It has a perfectly capable UV editor built in. You can unwrap, cut and stitch, pin verts by selecting vertices (which causes them to be pinned and excluded from the unwrap passes), normalize island scales, stretch optimize, and a bunch of other things. It's not a super premium unwrapping and packing solution but I don't think you are uv mapping terribly complex organic shapes. I mean if you're already comfortable in Wings...