im looking to buy some over the ear headphones for Christmas, intend to use them on iPod Touch, Blackberry, PC n macbook. generally listen to hip-hop, rock, heavy metal, Spanish music. What are differences in the products? Which are better? Sound, price, comfort, durability, noise cancellation. Bass is not a big issue, i know the beats have a lot of it. I don't wanna fall for brand name i want a good product. I have bose companion series 3 for my computer and they sound good. Any suggestions or advice is greatly appreciated.