From Nikon to Canon? I'm about to drop a lot of money on a good professional level kit. I was thinking initially that I would go for a d300, 17-55, SB-800 and then a 70-200 down the road. I'd be using my d80 as a backup, with my most used lens on the d300. The big question: if you had the chance, would you drop it all before you got to invested, and go Canon? For the same price, I could sell my d80, get a used 40d, used 5D, a 17-40, 70-200 f4 and 50mm f1.8. The 40D tickles the performance of the d300 in terms of low light and just about everything else, and the 5D pretty much kills it and is full frame. A lot of Canon people are dropping their gear at a lower price to go for Nikon stuff, and in the long run I will be working with a lot of people that use Canon gear. I.e. the workflow will be Canon based. Anyways, from both Canon guys' and Nikonians, would you make the switch and start learning the platform now?