I am an inexperienced AutoCad 04 user on PC, and I made the 'risk' of going against industry standard and jumping to Mac and Vectorworks.
Probably the best decision I have made. No more unstable PC probs, and VW is a great software pckg.
VW is WAY easier to use, WAY better results, WAY better value. Even if I stayed with PC, I would buy again. Tech support is also good.