I have not had their washers or dryers, but in the kitchen our Samsung dishwasher, fridge, and oven had lifespans of 3 years, 5 years if you discount the failure to dispense ice, otherwise 2, and 6 years and counting but having replaced the main PCB twice, respectively. One PCB was technically a non-Samsung repair, but that's only because Samsung didn't have any parts available for several months.
The "smart" TV is also terrible, but in its defense it's still mostly working okay as a dumb TV with a Roku stick.
My Galaxy S3 was great.