I spent 7 hours in airports and in flight while traveling yesterday. I brought my PW2 and my Nexus 7.2. Started out reading on the PW2 in airport while awaiting a delayed flight. After reading for 1 hour my eyes were straining big time, so I switched to the Nexus 7.2 and was able to read another hour at the airport and 3 hours during flight. That makes the PW2 a big fail IMO! The screen was tinted blue while at the airport where lighting was bright. A lady across the isle from me had a K4S and her screen put my PW2 screen to shame.