Alternative to Sketch-up?

[Brad Jensen]

I was wondering what people were using for design tools other than Sketch-up (I heard Rhino, are there others?) and what software tools that they are using to generate their CNC toolpaths.  I would like to be "lazy like a fox" and use someone else's VCarve file for WikiHouse 3.1 if it exists or someone else's Revit files for design. 

 Also, I was wondering if anyone had experience with Autodesk Fusion 360.  It is currently free and I have spoken with a company rep who said that the current plan is to keep it free for "hobbiests".  I think it would be similar to the Sketch-up licensing and has a lot more functionality, including collaboration tools.  Unfortunately, no parametrics though.