This is a great device for music, but it has flaws in video playing, it has a closed app marketplace, and an outdated browser. It is ONLY good for music, but it does that GREAT. Sound Quality The sound quality is akin to the newest I-Pod touches, and the downside i see here is no external speakers. Performance It has limited support for games and the built in browser it outdated, so it has no flash or new HTML version support. Battery Life The battery life isn't great for anything but music. For that if you have the brightness on low settings, you can get 5-6 hours of music. It is great for those long car rides Durability My favorite part of this device is how ruggid it is. The back is a grained metal, so it doesn't scratch easily, and the screen hasn't cracked after my 3 years of using it. I would recommend a screen protector just in case. Ease of Use Everything you use frequently is up front, but the lack of access options if annoyoing. Sorting is limited, and the internet app is bad. Design This is not great just because of the lack of user interface features (cameras, speakers, microphones) of which is has none.