Android is the best! I only agree with three of your top 20. That means there are so many apps available. The photo editing and camera apps are endless. Vignette and Camera Zoom FX are two of the best. QuickPic is the best photo gallery substitution out there. AndroZip is a great file manager. I love DoubleTwist for music and video controls. See so many options in Android. You cannot go wrong!