This is what they sent me, I didn't special order the ball end adjusters or anything.

Jesel recommends the ball end adjusters. They say they have less friction. I haven't seen their test data but I don't have any problem with their claim. Besides, I kind of prefer cups on the top of the pushrods when using splash oiling. For a pushrod oiled combo then the ball/ball pushrod would probably be the best design but I'm using spray bars. It just seems that an face up cup will have a better chance of catching and holding some oil in it that an upside down cup.