If I may interject; Rusty is with a small Engineering company, in a very competitive, and Economy Impacted city in Florida.
I think they exemplify a typical small company, and the customers reluctance to be forced down the path of constant upgrades through the subscription program, and the lost productivity inherent therein (Anyone see my MAP menu in the C3D 2010 Ribbon? OH, imagine that they decided to STOP loading MAP by default how handy, now every one must do this
http://usa.autodesk.com/adsk/servlet/ps/item?siteID=123112&id=13267172&linkID=9240697. They like many of the companies to whom I provide services are frustrated with each new version offering tools, that Do NOT function as advertised, lack of product support (service packs) for older versions. For many companies the upgrade cycle simply does not match their Project cycles, and they find themselves' like Rusty here using older versions which autodesk has decided they will release NO MORE patches for despite being on subscription. That and leaving things broken, like Plan Production tools (More Empty Band Sets anyone), and the continuing issues with Pipes. I think you can add that up as to why folks are not upgrading, and not on subscription.