Interesting that someone should ask this now, because my best friend just got a 521 and came over yesterday. I have a 920 and 810 and I compared all three screen against each other. Personally, my favorite is the 810's because of the AMOLED. Colors are so much deeper and just gorgeous. I prefer the 920's screen to the 521's, but the 810's is definitely the best looking. The screen on the 521 is a bit too light for my liking... Don't get me wrong, though, it's a great phone.