I would vote for Legend if given the choice...I've been to various places such as pool rooms, bowling alleys, golf clubs, etc...And the best guys/gals in all those places, even though still alive, are usually referred to as legends...
It goes something like this...You see a person playing extremely well and you ask the local patrons, "Who's is that"...Then the local replies, "Oh, that's so and so, their a legend around here"...It might just be like that where I come from and since I'm still where I come from, I choose Legend...
Champion is associated with "The Senior Tour" in my mind...