WHO IS THE GREATEST MOTOCROSSER OF ALL-TIME?

I think that was a matter of opinion up until Ricky Carmichael dominated the sport. Then came along James Stewart who they called the fastest man on the planet. Now you have Ryan Villipoto who seems to be winning all the titles if he is not injured. All of the old school fans still like Roger DeCoster, While most think Jeremy McGrath is by far the greatest Supercross rider of all time. The Australians of course are going with Chad Reed while the Europeans are going with Stefan Everts. So tell me who is your greatest motocrosser of all time. I know there are a lot but I WOULD REALLY LIKE TO KNOW.