I need to buy one semi-portable over the head headphones for the trips and carrying in the bag that are comfortable and have a good sound. They also need to be sensitive, since I will listen them mainly from my smart phone. Price range should be no more than 20-30 usd. I am a grown man, medium...

  For the past couple of days I am searching all over the internet for the best headphones. And on some chinese sites I stumbled on some chinese manufacture called "iSK". They have couple of really good headphones in their production line. This model "iSK HP2011"...