Sadly for autoCAD/Powerdraft I do not have nVidia graphics Considered going that way but I just didn't think it was worth the additional money. Might be going for a gtx280 after all though. But before purchasing I wait for details on the rumoured ATi 4900 series.
Civil is still downloading, internet's crappy 200kB/s tops and it's around 4GB.
I don't know to be honest. I believe the Quadro series are ahead in sales, but that could also be because companies just buy the most expensive card xD