Anyone have a recommendation for a good one of these? I am not officially diagnosed with SAD but I get super melancholy during winter months and I always have a really tough time right after the holidays. I'm looking for one under $100. Anyone have some good recommendations?

Also, does anyone have experience using these? Did they work? Did they not work? Is this a supreme waste of my money? Someone mentioned full spectrum light bulbs to me once, but I always get super confused when I try to go to the hardware store and end up buying something that is NOT a full spectrum light bulb.