Which food dehydrator is the best?

The Nesco one. I had another one that wanted me to dehydrate something for days if I remember correctly before the jerky was done. The Nesco one takes me 6-8 hours a batch depending on the thickness of meat.

I only make jerky with mine, so if your wanting it for another use then you can disregard this, however, I would think that it would still be the most efficient one out there regardless of what you were dehydrating.

This is what I have

Only downside is that it's a bitch to clean-up, but every dehydrator is going to be.