Got one recently. Like anything, it has it's good points and bad points. It used to take about 6 hours to cook my barbecue pork chops in a crock pot and the instant pot can do it in 30 minutes. But... the barbecue sauce cannot thicken and get baked onto the chops like in an oven (can't do it much in a crock pot either, for that matter.
Cooked a great pot roast in it in just 1 hour. It's really great for pot roast. Seared the roast in a pan first, with butter, garlic, and olive oil. Placed in Instant Pot with some beef broth, Lipton Onion Soup Mix, carrots, potatoes and onions. Perfect.
Also made a chicken/Stove Top casserole in it that was great. Chicken tenders with chicken broth for 14 minutes, then mix a can of cream of mushroom soup with sour cream and pour some on the chicken, then add the Stove Top on that, then the rest of the soup/sour cream mixture on top - cook for another 10 to 15 minutes.
Oh, one more problem with the pork chops was it seems to infuse the bone marrow? taste into the meat from all of the pressure. Not a big fan of that aspect. Maybe trying pork chops without bones is the trick next time.