Don't buy an extended warranty and also consider buying from a local appliance store where they will have comparable prices and real service.
An example, my buddy & wife bought a washer/dryer at Home Depot. After a week they find that the washer is leaving black marks on the clothes. They call and find that if you buy appliances from Home Depot they are affiliated with some low end national service company. They find they can't schedule an appointment and are told someone will need to be there all day. The guy shows up and announces that he knows what the problem is, does not have the part and is not authorized to fix it because it is an expensive part and it is probably broken thru abuse? After numerous calls and threats of legal action someone authorizes (two weeks later) a real service company to repair the washer.
My other buddy bought all of the appliances for their new house at a local store. Thy had a problem with the door lock on the washer. The local store gave a specific day and arranged to call my buddy before they were coming so he could go home to meet the repair guy without having to take the day off. The repair guy came with the proper part and repaired the door under warranty.