Hello I'm looking to purchase a pair of head phones with a great bass and sound quality. I'm assuming these headphones will need to be over-ear, and I desire bass quality to that of the Beats (by Dr. Dre). I have heard many complaints about the value of Dr. Dre's headphones lately so I decided to turn to you, the pros, for help. If you would, please recommend a pair of great bass sounding headphones, that also have the best quality sound for their value. I'm comfortable spending around $300 or less. Thanks!!!