I have had a LaCrosse Technology Atomic Clock for years. Dead accurate, it sets itself by radio to the National Bureau of Standards' radio time reference, WWVB. And costs less than $20. Sweet.
But when the government changed the dates for switching to Daylight Savings, my clock didn't know, so for a couple of weeks in the spring and again in the fall, it's off by an hour unless I mess with it.
To make the story short, even though the clock is years out of warranty, LaCrosse Technology replaced the movement with one that's smarter, for free. They did it quickly and were courteous.
I would buy from these folks again.