I don't know much about Bartz but I've always been impressed with Autodesk, or rather the products 3DMax, Maya and the pro video tools.

Max is the first product I'd heard of where the developers were not tied to an office, they were all over and met once a year. When Autodesk bought Maya many thought it would be merger slash and burn but both 3D products are important in the market and have ongoing impressive development.