Ok, I just ordered one of these. I thought for the price it really couldnt be so bad. I really only use my vonage for cheap calls to Thailand for my wife and if this works out the we will just continue to use it and drop vonage as I have a pc in the house that is running all the time anyway so I just put the magicjack in that and run the rj11 cable to my house phone "network" like I did with my vonage and so far cant tell the difference.
It also will be easier to travel with and I would say for anybody that travels outside the US this would be a nice thing to travel with.