@otb designworks said:
I'm teaching myself Rhino right now.
I really like it; while it isn't quite SU for ease of modeling, it does have a very nice inference and customizable snapping interface that, once you figure out it's "flow", it is really very powerful. And the modeling tools are awesome; it pretty much even has a push/pull tool.
There are a ton of online video tutorials and training aids and their forum is very helpful as well. What has taken me the most time to come to terms with is that there seems to be 5 different ways to accomplish anything and there are 5 different ways to access each of the 5 different ways and trying to figure out what is fastest and most efficient is a trial and error process.
I am using the MAC version, which is still missing some functions, but I find it to be a very useful software to know how to use, especially if you need to produce STEP or IGES files. Another huge benefit to Rhino is that it can import and export darned near every file type out there, which makes it fantastic as a file converter.
I would never, however, use it for architectural work and blueprinting; to me, SU-LO is a better solution for that.
Its interesting that you say that you would never use Rhino for architectural work. Rhino with its Grashopper plugin has been extremely popular with Architects. In fact that type of visual programming interface has inspired various copy cats in the Architectural Design products such as Dynamo (Revit) and Marionette (Vectorworks).