There are not too many benefits in the end. If you have a microphone you can do voice search via Cortana, and the new Microsoft Edge browser is innovative in terms of marking up web pages to send via email.
Other than that, not much, and I am keeping Win 7 on my main desktop for now.
Supposedly it will play DVD's but have not tested that yet.
http://www.neowin.net/news/microsoft-rolls-out-windows-dvd-player-for-windows-10-users-who-used-to-have-media-center
Reportedly there is a media player app from Microsoft, although I always use the VLC Media player which is a free download, and should work in Win 10 as it does in every other version of Windows.