We got the smaller on when it first cam out and loved it! About 2 months ago we decided to upgrade to the 22". Im not sure if we got a dud, but the cooking surface seems convexed in the middle. EVERYTHING slides right to the sides or front and back. When looking at the grill you can easily see it. It s not a big deal when cooking meat, but whenever we cook veggies they all slide to the sides. If you try to cook anything with oil, you have to put the item on first then oil so itll stay better. You cant cook eggs on here.