Agree that Murray is better than all the guys you mentioned except Hewitt. 2xYear End Number 1, 2xGrand Slams and Masters Cup winner is pretty impressive (may have not been the strongest Era ever but all slams count) . I would say Andy and Lleyton are pretty even so far. Although Murrays likely to have the better Carrer by time he retires.
2 x Head Speed 300 With Babolat Pro Hurricane @ 57 pounds