I'm pretty happy with mine. There are some shadows at the bottom, but I can live with that.
One thing that does bother me though is the minimum brightness. The other night I was tossing and turning in the middle of the night, and decided to read for a while. Even on minimum brightness it felt like it was lighting up the whole room. (It probably wasn't, but I could have read quite comfortably with my night-adapted eyes with only half the light.)
Still, four stars:★★★★☆