Hi, I am interested in purchasing an atomic clock to get away from the nuisance of incorrect time (or blinking time when the 9v backup battery dies) displayed by conventional led bedroom clocks after power outages. I have looked at various atomic clocks available online but have noticed a lot of negative reviews about the clocks failing to set the time accurately as well as taking a long time to light up the time after the power comes back on after a power outage. I would like to hear from anyone who has had experience with these clocks and especially recommendations for a make/model that reliably displays correct time and also displays the time as soon as power is restored after an outage.