I have one of the first generation units on a RT, it has worked flawlessly for many, many miles.
I also have had other fused based products, so from first hand experience, instead of conjecture, I feel safe to say the PDM60 is unmatched in what is advertised to do as compared to the other products.
If you have used a product, please tell us your experience with it. If you just want to voice your opinion, well you know.......
That being said: The Stebel horn is a POS. (yes, I had one, and no not on this bike, and prior to the PDM)
Howdy Mr very little berries!