I have a large dehydrator and dehydrate fruit and veg and make jerky on a large scale,the ninja would not have the capacity I want so I have never used it. Electricity here has always been much more expensive than u.k. so I rarely use the ordinary oven unless I am batch cooking, so probably once a month. Everything else goes into the ninja and/or the Flavorwave.
It's a great pity the right of free speech isn't based on the obligation to say something sensible.