In work we have both the reflex ball and the morgan pass developer.
The reflex ball is ok, but the pass developer is awesome. Really works your obliques, you wouldn't believe - after a few weeks of training with the heavy ball - how easy it is to throw a normal one. And when passing a normal ball becomes easier, both distance and accuracy becomes easier to achieve.
Could you explain a little better of what your on about?
I really can't picture what you're trying to explain.
And did it get good reviews?