Best light box for circadian sleep disorder

Hi All, and mods please move this to general Q’s if you think it’s more appropriate… seems like this is an opinion thing though, so hopefully this is the right venue. I’m looking to purchase a light therapy light box for my advanced sleep-phase disorder (I wake up at like 4 am, start yawning at 6 pm. No fun and I want it to change) and would like opinions of others on which one might be best. If anyone uses light therapy for SAD, circadian sleep disorder or other problem, what is your take on the best light box to buy? Looks like there are so many choices, it would be nice to have some direction. I have $100 or less to spend. Thanks in advance.