Sorry that you have such prejudice against the best zappers available. What you do not get is that every thing that goes into them goes in for a reason. That reason is to improve effectiveness.
Almost any zapper is better than no zapper, but seriously, why would you push someone towards a lesser version?
There are also zappers out there the sell for more than twice what the most expensive ParaZapper does but they are not any better and probably not near as good.