re: Market forces
I have R14, too. It's my most recent version, and it does save to R13. I'm just used to R13.
I don't import that many models and drawings. I'm usually the guy people import from.
But I can also use other tools to hack things like 3DS Max models and other sources if I need to.
I should move up in the world, particularly with 3DS Max (better with textures than the modeler I use) but at this point, maybe I'm just too old a dog.