https://usa.autodesk.com/adsk/servlet...112&id=9974388 some good reasons to upgrade. I personally love what autodesk have done for maya and it seems to me as if maya is alot more stable as well. 8.5 has got alot of cool new features and I`m now really looking forward to maya 2008 (although I hate the naming) as those new rigging tools look very handy indeed.