I need to buy a pair of headphones and they have to be closed. I recently tried my friends radio shack brand optimus 135s, and they sounded very nice, were very comftorable, and were quiet from the outside. however, I am hardly a headphone expert, and the only headphones I have really ever listened to are crappy ones, and my friends. so my question is, would a pair such as the sony MDR-V6, which seem very nice, or another closed headphone brand/type for under 100 bucks be significantly better than these? The optimus are 70 bucks, and the reason I am considering them is because I can buy them localy and I know what they are like.