I think I may have had one of these (PZ) years ago, Im sure you've made improvements on them since,Ive had many zappers.
It was well made and worth the money.
since I purchased the para z, i bought the bio wave, sold that after 6 years, spent some more $$ on the gamma and gave the para zapper to a relative.
Iv just decided to get a programmable Fzg,I felt like was missing alot.
For the cost of the paraZ, looks reasonable, for anyone who doesnt want to spend alot of $. I would suggest the PZ.