Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A great looking product that even works sometimes!

Okay, the thing looks great and feels tinier than the previous generation of Nano and that's a good thing. There is roughly 7.5gb free space for storage and that's a good thing.However! Buyer beware, because I have found one important negative detail, which is one serious glitch:Approximately 1 in 3 of the mp3 file's I uploaded to the 8gb Nano won't play. Instead the screen turns black with a white Apple logo displayed for approximately 5-6 seconds, then the screen goes off completely for a moment, then reboots to the black screen with the Apple logo for a few seconds then displays the main menu. Sometimes the root folder of the mp3 file that didn't work is removed from the directory tree.I haven't found anything online about this glitch--as far as a firmware update or if this problem is widespread. As much as I love it and want to keep it, I will probably be returning this iPod and waiting for a more stable version to be released.:'(