COSORI 12-in-1 Air Fryer Toaster Oven

I had been shopping for an air fryer / toaster oven combo device for several months, but found it tough to make a decision, since there were so many models available of all shapes and sizes, from a bewildering array of companies. I was fairly certain I was looking for a combo model air fryer, since my old (non air frying) toaster oven was clearly on its way out, and I wanted a device that could do both types of cooking, since I used my old toaster oven a lot (I don't usually cook enough to warrant heating up my big, full-size oven). This Cosori 12-in-1 model had been recommended as a lower cost alternative to the highly rated Breville model... similar features, maybe not as highly reviewed, but literally half the price. About 3 months ago, I randomly logged onto Amazon, and happened to click on this product, as it was shown as a "recently viewed item", and saw that for a period of just a couple days, there was both a manufacturer and a vendor coupon available simultaneously, which made this product available for a particularly low price, even cheaper than some clearly inferior lower-end models... so I finally pulled the trigger. Everything arrived on time, and in good working order. I set it up and tested it, and "bake", "toast", and "air fry" all seemed to work. I don't know much about the other 9 functions, and don't anticipate using them much, so limited my initial testing to those 3. I was initially skeptical about getting a model with digital controls, because I appreciated the simplicity of the manual controls on my previous toaster ovens... but these controls were very straightforward and intuitive... no need to consult the manual or online resources at all. So, after I first set it up, I didn't actually use it for a few days. The reason being, before I started cooking in it, I first ordered a large silicone mat to place on the counter below it. I did this because every toaster oven I've previously owned always wound up with crumbs and gunk underneath, periodically requiring an extra hard round of counter cleansing. I figured placing this mat underneath should make that much easier. I then wrapped the removable floor panel of the Cosori oven in aluminum foil, which should also make that much easier to clean. I also ordered another, smaller, silicone mat, and placed that on top of the foil-covered floor of the oven. I made sure the mat is heat resistant to above the max temp of the oven, of course. In the 3 months I've been using it, I haven't had to replace the foil covering the floor of the oven so far, and I simply rinse off the silicone mat that sits inside the oven every week or so. Since it's flexible, it's very easy to do. Some reviews here mention that it's very difficult to clean the rest of the inside of the oven. I haven't encountered that myself, but I simply might not be making the kinds of things that make such cleaning necessary. So far I've sprayed and wiped off the inside of the front glass door maybe once a month, and the inside walls have not required any cleaning thus far. As for the functionality, I've found that it does everything my old toaster oven did, plus (obviously) more. Some professional reviewers like Consumer Reports or Good Housekeeping or CNET test a bunch of models with the exact same foods, and compare results. One of the things they do is fill the oven up pretty heavily, then test for things like uniformity of cooking. Where they might, for example, toast 9 slices of bread simultaneously (since a lot of these devices advertise that capacity), and see how evenly they toast... often finding that the ones in the corner didn't cook as evenly, etc. Well, I'll tell you right now, I'm a single guy, and rarely need 9 slices of toast... but when I try to toast 2 slices, centered in the middle of the oven, they come out perfectly. Same goes for making a frozen pizza. Or air frying 6 chicken wings, which I do often. Or making a standard size tray of brownies, which I've done once. Or heating up a couple hot dogs (I prefer heating them in a toaster oven as opposed to boiling or microwaving). I haven't tried stuff like baking a whole cake, or making a whole rotisserie chicken (even though it came with the accessories to do so), since, again, as a single guy, there's not much reason for me to do either, and the price of a store-bought cake or rotisserie chicken is low enough that I'm not really going to bother. Also, since this is the first air fryer I've ever owned, one of the things I wanted to check is that there was really a difference between baking and air frying. Obviously I can see and hear the fan turn on when in air fry mode, which is the major differentiator (though unlike what some have said, I find the fan very quiet... I can only hear it if I'm right next to the unit, not even from the other side of the kitchen). So, I tried bake vs air fry when making wings (since I make them often), and I can say that there is absolutely a difference, and they're noticeably crisper when air frying. Some have said that toaster oven / air fryer combo models don't make food as crisp as typical cylindrical air fryers that have a frying basket with a handle. Well, I can't comment on that, since I've never owned one of those. Also, I know that french fry crispness is a major factor for some people, and understandably so. However, I haven't tried making fries from scratch, so I also can't comment there. But, I've found this device to do a very good job both with bagged frozen fries, as well as with reheating fries from a restaurant. I just spray some cooking spray on them... I don't actually add any oil beyond that. Anyway, I hope this review was informative, while also understanding that it will probably be more useful to other single people like me who are not cooking very large quantities at once. One more thing I found as well... a couple reviews here mentioned that once you initiate a cycle, it starts preheating, then beeps once it's preheated, then you have to go back and press the start button again to start the actual cook cycle. I'm not sure why people think this is strange. After all, the whole purpose of preheating is to get the oven to the proper temperature before putting in the food... so of course you have to come back and put the food in, and then press the start button again to start the cook cycle. That being said however, I don't fancy myself some kind of professional chef, and I don't want to bother waiting for it to preheat and then walk back and put the food in. Ok, sure, on the very rare occasions I'm making something in my huge, full-size kitchen oven, I'll do it. But when I'm just heating up something small, in a smaller appliance like this Cosori 12-in-1 oven, I just throw it in, add somewhere between 3 or 4 minutes to the cook time to make up for the lack of preheating, then skip the preheating function altogether... which can be done very easily, by simply hitting the start button a second time.