I've tried every COSORI air fryer and they've always impressed me with major value-for-money. It's not a brand you'll find outside of Amazon or company's website, but the range has everything from family-sized fryers to compact (and surprisingly cute) options for apartments or small kitchens. If one of your reasons to buy an air fryer is the money-saving aspect, you may as well start with a budget-friendly option from COSORI. They're easy to clean and use, and just as good as some of the much more expensive brands on the market.
For a start, the COSORI L501 Air Fryer has a removable air frying insert that lifts out from the bottom of the basket. By contrast, the COSORI Air Fryer Max XL has a basket that lifts all the way out by pressing down on the hinge of the handle. Personally, I prefer the L501's style of air fryer basket, because it's a lot easier to put in the dishwasher. However, this style of air fryer does make it hard to tip onto a plate without any oils and juices spilling out from the air fryer base.
In terms of build, the COSORI Air Fryer Max XL has a plastic exterior with a front panel full of touch-sensitive presets, and the COSORI L501 air fryer has a glass top panel that will work better if you're placing the air fryer on a kitchen island as opposed to under a kitchen cabinet, where the touch control screen can be concealed in the dark. Both have a reminder to shake midway through cooking and a square cooking basket that fits large cuts of meat. However, the COSORI Air Fryer Max XL is a little larger.