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Scott, those are some nice looking models. I like the subject matter!
I'm a mechanical engineer in the aerospace industry and have been a Catia V5 designer/modeler for the last four years. Before that it was V4, V3, Computervision CADS3 ... all the way back to Gerber IDS in the early 1980's.
Solidworks has a lot of functionality for the money and has many similarities to Catia V5. STEP files are useful for sharing between different systems; translating via STEP files, I'm able to read CAD files from suppliers that create in Unigraphics, Pro-E, Solidworks, etc. It's not perfect but get's you most of the way there.
My V5 models are typically sent off for rapid prototyping using stereolithography and CNC part production. It's pretty slick, especially as the capital costs of the equipment comes down. I'll still always admire the skills of an experienced machinist and what can be done with a traditional lathe and mill.
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Marty
'73 911T 2.4 MFI
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