I hmm'd and haaa'd about the FSD Navajo for 6 months after learning about it. I finally decided I had 25 bucks to spend on it, so I did. Am I ever glad I did. It is the only payware I have, and I feel it was WELL worth the money.
I see you had the same issues with all the freeware Navajos too. I have more than 7 different freeware Navajos (my favorite aircraft), but because of my time in them, I get more frustrated with them than I enjoy them, so none of them are even installed. I'd find a neat panel here, a good sound there, but I haven't found a model that is done to the standards of most other freeware aircraft.
I took this picture earlier this year, take a look at things like the nose angles, the engine cowls, the corners of the windows, the spacing of the windows, the size of the windows, the spinner size, de-ice boot size, the back window.
