Got this from warehouse123.com and have been using it for about 1 month now. Initially, I thought the navigation of the buttons are very user friendly, it actually works quite well. The sound is great and it works well with the fm transmitter. The weak point of this are the included ear buds. Fortunately, I purchased the Shure ear buds and they are many times better than the iRiver buds. Another weak point is the battery life. It only has about 10 hours and I need to recharge the S10 everynight.