I will keep this short as the other review captures the essence of my thoughts as well. I wasted money on a popular other brand (I will not name that brand, as I don't want this review to seem like a shill to discredit other brands). The other brand didn't have programs, and the intensity did not seem to be therapeutic. Vi*b*p*ate--is the brand if curious.
I have both the V009 and V007. They are being used in my Sports Recovery Center and are well-received by its users. The dual voltage is great since it is being used outside the United States.
The 3 protocols make it nice to have variation and not have to worry about changing frequencies manually. I think these are on par with the more expensive ones on the market if not simply better. I plan on getting the handle bar and will post a review of that later.