I don't like the Fork Separaters as you need to hit them hard sometimes and they damage the surroundings slightly too much. I tried one of the top-down-bolt-into-a-captive-holder type, but these don't fit very well. In fact I tried all of these and NONE of them worked, so tight was the interference fit;\

These didn't work for me!

However, success for me came best with a 3-Arm Puller, as it can be held centrally onto the top of the balljoint by unscrewing the top nut a little so thgat it holds the puller driver centrally, plus the arms fitted nicely under each side of the top wishbone. Something like this;

3-Arm Puller