Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 1st ipod killer

3 yrs ago a coworker sold me the 2Gb version directly from his china vacation with accessories for $150. 2 yrs ago, same guy sold me the 8Gb for $220....GREAT device.pros: manycons:1-dont know if its the age or what, but the thing gets stuck from track to track (VERY annoying when i plug into speakers at home & play LOUD).2- "updates music library" whenever disconnected from pc or usb3-battery life could be betterOVERALL: MY NEXT PHONE &/OR MP3/MP4 WILL BE A MEIZU(CURRENTLY AWAITING m8 16gB)