Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great mp3 player

Picked this player as my Christmas gift. Already had a small 512 MB M200 series SanDisk player and really liked that, so I stuck with SanDisk and upgraded to the e250. This is a great player. I love the large colorful screen. The controls are easy to navigate. But probably the best feature of all is the expansion slot. Since I got the smallest capacity of 2GB, I picked up a Micro SD card and filled that with more music. I have not tried any video on this yet, so can not comment about that feature. The only negative I have is when you start up the player, it takes about 30 to 45 seconds to run through its "refresh database" warmup. Not sure if that is because of the expansion card, but it is slightly annoying having to wait every time you turn it on. Other than that minor flaw, nothing but rave reviews.