I have owned these headphones for almost 2 years now and i absolutely love them. They have great sound quality and the absence of wires turned out to be much more satisfying then I thought. I listen to mostly rock music but the bass is pretty good for almost any type of music. Overall quality is BETTER THAN DR.DRE BEATS in my opinion.Interference on Bluetooth frequency can cause drop outs which sounds like "skipping" on a cd player. Walking around Campus, drops out when I'm in areas with wi-fi and lots of people using cell phones. Sitting around studying and working, almost never drops out.I pair it with my ipod 4g but had a 2g and it worked just as well. I don't really use the controls on the headphones themselves, just control volume and tracks from the ipod. Somewhat tedious to connect to Bluetooth each time but worth it in my opinion. Also, will wear for all-night study sessions and not much ear discomfort.If i could, I'd give it 4.5 stars with markdowns for signal quality but the sound is clear and nothing is really overpowering. I never use it for phone calls or movies, just music and it's perfect for that.