Definitely YATES-------I`ve never found the reason why he retired after winning 6 Olympia titles.He could have won more,assuming he did`nt tear up anymore muscles,(torn bicep,quad,etc.)
http://www.bodybuilders.com/mro-p31.jpg would have to say Yates...looking back at some of Yates old photos comparing to Coleman....Ronnie has to have him in the arms department.