I just found an interesting video on youtube,
It is a little known Fischer interview from his late days in Iceland. He speaks about chessplayers of the past and I think it is safe to say he considers Capablanca to be the best player. He also considers Morphy, Steinitz and Alekhine to be great players but Capa had a light touch!
I have read a similar Smyslov statement about the greatest player of all time.