An age-old question

When setting the alarm on a clock radio, does it make more sense to choose a radio station you like, giving you something positive to hear when getting up, or a station that plays grating music you don't like, giving you the incentive to get up and turn it off?  Until recently, I'd always gone with the former, but in recent days, I've chosen stations I don't like so much.  I've gotten up well ahead of time, as a result.