If somebody is looking for a NAS server, I'm just selling mine on the market place: [FS] - Synology NAS + 4X 3TB HD [Zurich or Thalwil]
The NAS has support to Plex Server and DLNA, so if your TV is modern, you can run directly without an external media center.
Still, I have a dedicated HTPC in my living room. It's a Zotac ZBOX : https://www.cartft.com/image_db/Zotac_Z-Box_HD-11.jpg
Quite small box, I can turn on and off using my phone, and I run Kodi (XBMC) on it.
All my videos, files, music, etc are on my NAS. I don't even have HDD anymore. All my computers (pc desktop, living room media center) have only a SSD.