Been doing some digging, the first Panther Ace that came to mind was Fritz Langanke, he commanded a Panther tank in the 2nd Company , 2nd SS Panzer Regiment "Das Reich".
Here is an interesting story of some of his fighting in Normandy:
http://www.dasreich.ca/fritz_anec2.html
He is definately one worth looking into. I've seen him give interviews for various programs on the History and Military Channels and I have a lot of respect for this man. Here is one of his many exploits during the Normandy battles:
"Fritz Langanke's first clash with American armor was on July 9, 1944, south of Sainteny France, in which he destroyed 9 Sherman tanks in less than 15 minutes with his Panther tank."
You can read more about his exploits here: http://www.angelfire.com/goth/bobtank/langanke.html