Hallo,
I've had 7 different Kobo Auras with bright spots, and 2 with uneven lighting. The first 4 I've ordered via Coolblue.nl, who where so kind to let me return all of them and gave me my money back. The other 3 where ordered via Wehkamp.nl, I've just returned the seventh Kobo Aura today...
Most stupid is that I have the Sleepcover for some weeks now, but no ereader

If someone will ask me if I can recommend the Kobo Aura, I'm sure what to answer hehe
Greetings from Holland,
Sybrand