Bought a 75 inch Samsung HD TV in March 2021. In June 2022, after the manufacturer's 1 year warranty expired, the fucking thing went south with vertical lines in the picture that couldn't be adjusted or removed. But, I purchased it at Costco and leveraged the concierge warranty and exchanged that Samsung piece of shit for a 75 inch Sony. Took about a month and several emails, but it worked out. No more Samsung crap for me.
Bought a Bosch Dishwasher from Lowes in April 2022 that was highly recommended Best Buy in Consumer reports. Purchased a $69 3-year extended warranty for it. In June 2023, the Bosch flashed error messages and stopped running. Called in the warranty, but they were unable to find a service repair contractor in my area, so thy sent me $762 to get a new dishwasher. Good stuff. I contacted a local appliance repairman who came out and diagnosed that there was a clog in the drainage and the machine automatically stopped so that there would be no flooding. He bypassed the clog and placed the drainage valve through the garbage disposal, and the machine has worked perfectly ever since. The repair cost me $175. So that $762 check minus cost of repair and cost of extended warranty still left me ahead by $518. Quirky note: WA state does not want you routing dishwasher drainage through your garbage disposal, but plumbers and service people here regularly ignore that. The original installers ran the drainage through a simple outlet that was unable to be cleared since it was about 1/2 inch thick and ran down at a right angle from the machine.
I think that since all major appliances/electronics are made in China it makes sense to get an extended warranty/service contract, since the Chinese are not known to have good quality control.
For other less expensive items, not so much.
Opinions?