As for battery life,
Alien Complete Series DVD Box set, it was great for the few months I was using it. The battery was mounted in the speaker housing without the control buttons,
Moonlight Season 1 DVD Box set, but I rigged it in the helmet closer to the controls because i had space there. The only thing I could probably complain about was that I wish it was louder,
Blood Ties Season 1 DVD Box set, but for a $20 hack; it was plenty.