Our air fryer works great. But the first one we bought was a POS, this pup works great. Our Breville toaster oven is a beast. Great. If something is not functional and useful, it's GONE. Juicers are like that, yeah we juiced a bit, and that was that. Gone.
What we have not purchased, indeed was a sous vide apparatus. To me it just seems like you are making bacteria meat slab in a bag, that looks like "burled meat". Gross/ I know I know. Leave me alone.