I don’t know about the Foodi, but we got the largest Instant Pot we could (8 qt) for the versatility. Good for big cuts of meat, and large batches of soup/broth. (You can buy a lot of accessories, like stacking inserts to cook two dishes at once.)
Believe this is 8 quarts, the actual quart size is nowhere to be found (either on the unit or the literature). It came with both lids and the artillery needed for cooking with either lid: racks, basket, pot, etc). One you tuber mentioned 8 quarts, the only reason this one is thought to be.
I do love the fact it is so easy to clean. The pot comes out and is then poured empty and wiped with a clean paper towel. It can be popped into your dish washer along with the fryer basket and rack. The lids come clean with just a paper towel wipe. The fact that there is NO GREASE spattering to land on kitchen surfaces is a cook’s dream come true!
At one time thought an electric smokeless broiler might be the answer. No longer. For any broiling the Foodi would be the helper to fill the bill.