Oven Pros: quicker and quieter. Oven Cons: liver aroma whilst drying was quite strong.
Dehydrator Pros: less 'aromatic' than the oven process. Dehydrator Cons: took three times longer and noisier.
As these are not salted or processed with chemical preservatives, keep an eye on them for signs of deterioration in crispness or signs of spoilage.