I don't have my grill very long. but everything I made came out great.
I used the grill, browned nice and held the juices. The air frier made a large amount of fries evenly crisp. I like it so much I decided to purchase one for my son and his wife.  And it is so easy to clean. It did smoke a little at first. I think this is normal for grills.  it's fine now.