I dont use Maya because I'm in love with 3d Max ( :D ) but here are some links that could be helpful: http://cg.tutsplus.com/category/tutorials/autodesk-maya/ http://cg.tutsplus.com/tutorials/autodesk-maya/quick-tip-how-to-enhance-render-quality-in-maya/…
But these differences might be the only thing stopping Autodesk from ignoring/killing other products. Just look at their Softimage marketing pitch: "The unique, multithreaded Softimage® GigaCore architecture and innovative tools like ICE (Interactive Creative Environment) and the Autodesk® Face Robot® facial animation…
"Autodesk SketchBook Designer software is no longer available for retail purchase effective November 1, 2012. It will continue to be included in the following Autodesk Design and Creation Suites:" Nooope.