I used to struggle to get out of bed every morning despite 4 different alarms, and then I felt like a zombie all day - totally exhausted. As the sunrise started to occur later and later each morning (but I still had to be awake and out the door before it got light), I got really desperate to find a sunrise alarm clock. I researched several different models and finally decided on this one. I liked that I could use my own lamp, as with other models, but this one also had a radio. I listen to the radio while I get ready in the morning and really didn't want a separate clock and radio in the bedroom.
I was nervous about ordering this clock since it had just come out, it was expensive and there were no reviews - but I was desperate! I am very happy with it so far, but like another reviewer mentioned, I wish there was a "sleep" function for the radio. That is my only complaint after a month. I am no longer exhausted and groggy all day at work. I still use the buzzer (light beeping describes it better) at the end of the sunrise, but many mornings I wake up a couple minutes before the buzzer just from the light - and my current lamp is just 40 watts. I also use the sunset every night to fall asleep. The backlight doesn't bother me at all, as another reviewer said. It is also very easy to use and set the times.
Overall I am pleased with this clock and recommend it to anyone who wants to wake up more naturally using your own light source.