I made a thread about this a while ago.
On overall range with in ring work, character/promos and all around versatility: Angle may be the GOAT, I say that as a huge Bret mark. Bret's better in the ring, Rock is better on the mic, Stone Cold, Taker, and several others have better characters.
Prime Angle had no limits on his range of abilities. He may not be the GOAT at any one aspect, but he was certainly a Master of them all.
I'd be interested to see who everyone thinks was better on the mic and in character: Angle or HBK