Isn't 802.11n faster than ethernet?
Ethernet is a wired connection & can run upto 1Gbps. Standard n transmits upto 70Mbps (If I can remember correctly). But it all depends on your system(s)/ router & cabling. If your streaming lossless or .WAV audio & video files to your
TV or other device, I would always recommend a direct wired connection. Its also safer security wise. I like to be secure with my network & data, you never know who's out there. But when wired, make sure your router/server has a firewall or your system has one.
If you are unable to use a wired connection, then wireless is still good. But streaming video, depending on the bit rate/ sample rate for audio/visual, it could get chopy & annoying, sync'ing your media to your
TV would solve the problem, but large files, i.e. 3.6Gb, may take a while to sync.
Hope that helps.