Best headphone for $300

i wanna get some new headphones to use when i play games and listen to music, my budget is $300, i dont need a headset since i am getting a seperate mic.

thanks for any suggestions

1)  if you have a good headphone amp this one http://www.koss.com/en/products/headphones/full_size_headphones/MV1__MV1_Full_Size_Headphone

2)  ($499) http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&partNumber=MDRZ1000#specifications

2.5) you can get the mdrx700 for ($119) http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666308094#specifications

3) (149) http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666483289#specifications

4) And lastly, not the best audio quality but with 7.1 audio and wireless  (299) http://store.sony.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921666290086#specifications