I will be getting a keyless precision drill chuck with integral r8 shank. Options are 1/2” capacity or 5/8”. My drills go up to 1/2” and I will be getting a collet set prior to this purchase. I know better than to use a silver deeming in a keyless. When do you use the capacity above 1/2” in the 5/8” capacity? Which would you get? Thanks in advance!