I use these earphones with my zen vision, home pc, and work laptop. They have very good sound quality but are not for the audiophile. Volume is a bit low, but turning up the volume on the vision/computer fixed that problem for me. Range is very good as long as the receiver has clear line of sight (I was getting clear reception at 40+ feet), but walls or any other obstacles will cut down that distance dramatically (I averaged about 10-15 feet moving between rooms before the sound would begin to drop). These earphones are fairly light and look a bit bulky when I put them on. Fit and degree of comfort will vary from person to person, but I found them very comfortable. I can wear them for several hours without a problem. However, I have fairly small ears, and these guys fit a bit loosely on them. For me, they are secure enough to wear while doing chores and when I'm sitting at my desk at work but not while exercising. I can carry on a conversation with another person without removing them. They will run about 8 hours on a 3 hour charge. I do wish Creative had provided more protective storage than the fabric drawstring pouch they included. The plastic on the earphones also feels a bit cheap. The pads on the speakers cannot be changed out. When the battery dies out, you will not be able to use the earphones until they have been recharged. Overall, I am very pleased with these earphones. I was looking for a light, over-the-ear, wireless type of earphone (not many good ones to choose from right now), and these met most of my expectations. :)