You probably be fine with all you need to do with rhino.
For me the only reason I am considering SW is that it is an industry standard which means lots of shops use it and the parametric capabilities could come in handy. I had a job I turned down last year that needed it but I didn't have the capability or knowledge to do so.
From what I have been gathering for one-offs rhino will be adequate for just about anything.
How complex of parts have you made with rhino on your tormach?