Difficult to narrow to only 2/3, but If I have to choose from my years of watching Cas it would be John Joyner, Kev and Bob Beardmore. It might make it easier to ask people to list their 1-5 though to get a better idea. I would add Kevin Ward and Tawera Nikau. Obviously the likes of Hardisty and Hepworth are Cas Legends, but I am stating mine from when I started watching Cas in 1981. Agree with bigalf on Millo.