Alarm clocks?

Have any of you got one of those ones that wake you up naturally with light and sound? Wondering if you would recommond it? I hate being woken by a noisy alarm that makes me jump up to switch it off or on to snooze - leaves me jumpy and then I have to lie down again as I feel faint if I jump up too quickly and usully end up falling asleep again which makes me late and then I have to rush round like a headless chicken. Not a good start to the day !