Got the unit installed with my Panny plasma.
It was a brand new unit with an extra power cord and hardware for multiple mounting options - nice!
Panamax describes a back of the set mounting option and, lo and behold, I was able to do it with my set!
I didn't observe any dramatic improvement in the picture - maybe a little but I could have been imagining it - but I didn't compare any calibration screens either, so...
Worst case, it is protecting my expensive tv with surge protection and power filtering as good as many others and all for under $40. I am extremely pleased and recommend this deal.