So many people I know have them, and keep trying to tell me how marvellous they are.
Maybe I'm missing something, but I can't actually see what I would cook in one. We eat a lot of curries, stir-fries and then things like sausage and mash, lasagne etc.
I have a combination microwave/grill/oven, plus a normal oven and gas hob. Also use a slow cooker. Why would I need to add another gadget? I honestly can't see when I'd use it.
And please don't say chips are as good as proper chips! We only have chips maybe once every couple of months, so like them deep-fried.