It totally depends on what criteria you mean by "best". In terms of sheer excitement and the "how did he do that" factor, then Kenny Carter was the king.
For sheer raw talent and making it look easy, then it'd have to be Michael Lee.
For sheer professionalism and application, it'd have to be Peter Collins.
My speedway watching only goes as far back as 1970 so I didn't see the likes of Peter Craven ride.
There were lots of great riders in the 70's who would be worthy candidates for this accolade - Tiger Louis, Gordon Kennett, John Davis etc etc etc
