Hello, I am looking into buying a flying wire tensiometer. My instructor wants to sell his to me, it is from Aviat but it is over a decade old (still in the box barely used). He told me the new digital ones from Aviat are $1400!!! and offered me half price but I don't think his is digital. I have done some google searches and seen flying wire tensiometers for like $300. Is the non digital one from Aviat the cats meow or is it some serious hype and the cheaper ones are just fine. I mean this is the flying wires on my plane so I want it to be dead on and if the one from Aviat is the only one people trust then so be it but the cost is so extreme I wanted to get some second opinions before I plop down $700.