The many positive aspects of the system have already been described many times here, but the drawback with the "RDS clock" you really have to emphasize clearly: - The automatic time setting works only with strong signals, otherwise there are fatal wrong settings (several hours next ...) - The clock is corrected only when the radio is on! Consequence: If the weekend of daylight saving time, the radio will not operate (weekend break), then he is not around and wakes on Monday by one hour wrong. But just that I would have the automatic time setting! Therefore: radio clock would be the real deal, RDS clock is useless.