Hmm, I guess I could have ticked "Vector (bought) as well as "Raster (bought) and "Scanned hand-drawn maps", because I do use AutoCAD as well as Photoshop (and a bit of SketchUp). Oh, that's "3D modelling" as well, then. I use all three for my work (landscape architect), otherwise this would be a bit of an expensive hobby. I like AutoCAD for outlines - coasts, contours, roads, etc. - which I can then port into Photoshop or SketchUp. If you can get hold of AutoCAD survey bases, especially if they include topography, you cant tweak and edit them into something pretty believable.