are either available at a local library? I would generally just say "buy both" haha. I have (well had, my friend has it now) control unleashed. but don't know the other.
There is tons online as well. Currently I am investigation this couple, and going to read their information in detail, lots is free online. Their goal is Impulse Control, Calmness and Focus. I admittedly have not yet looked to hard at this but they seem to give practical tips (at least at first glance): Absolute-Dogs