Touché, I have had the privilege of using Solidworks about 6 years ago. It is indeed very clean. Maya has had a great modelling toolset for years, but the interface does indeed not do a lot to promote them. Mirai (written in Common Lisp!), had a much more organised approach and separated modelling, animation, texture maps, into different tabs. Same for Softimage.

Very untrue. Softimage, max, and Maya all now under the guise of Autodesk, all 3 on first start up throw Introductory videos on how to perform basic navigation, and choose the more common manipulators.

What are you talking about? What 3D suite has a GOOD UI? This isn't Drag and Drop magical effects, like those fire writing apps on the iPad. These are complex tools with complex workflows. It's just as "messy" as Maya and Houdini, and as highly customisable. That's the selling point to studios for these apps, customisable. The Zbrush UI is horrific, yet it's praised incredibly because the output is far more important than the method. Modo probably has the best UI in the market, evidently so because people don't talk about it.

NO socket for an infiniband card...oh wait.