With the new mac on its way I'm exploring alternatives to the 10m long HDMI cable I'm currently using.

I could get a mini display>HDMI adapter but that will keep the current setup with a long, fat, black cable running as discretely as possible from the computer room to the living room.

With the 1080p Apple TV 3 and the airplay mirroring I'm wondering if I could do the same thing but wirelessly. Same thing being, 1080p and 720p MKV video files.

Sounds great right? But how good does it work? Or even how does it work?

Is there any quality loss?
Are there black borders around the image?
Is it perfectly smooth?

Many questions. Does anybody even have an ATV3+Mac setup?