Engadget posted a very positive review of the Samsung Galaxy II, saying that this is the best Android smartphone, and it might well be the best smartphone today. Regarding the 4.3" Super AMOLED Plus displays, they say that the screen is nothing short of spectacular. Great contrast and colors and supreme viewing angles.
"We'd even go so far as to say it's better than the iPhone 4's screen, purely because, at 4.3 inches, it gives us so much more room to work with. It's almost impossible to split the two up in terms of quality of output, they're both top notch.". Engadget says that the original Super AMOLED displays exhibited slightly grainier images due to the PenTile matrix, but the new Plus displays (which use a real-stripe matrix) has great resolution and detail. The new display also has got rid of the oversaturated colors. The only down side of the screen is the auto-brightness feature (but that has nothing to do with the OLED...).