I personally dont think the Etihad is any better or any worse than other grounds around the country.
We just seem to be getting hung up on it like the emptyhad, again now better or worse than other clubs. I will say other empty seats show up more.
I travel 600 miles round trip and I have sat in silence a few time just in ore of our play. We join in the sing 99% of the time. We always try and get in the south stand.
Going away is totally different to home matches we are out numbered so try to out sing the home team , again like most clubs when away. Brighton this year was great really enjoyed that day out, and home by a decent time ;). PSG was a great night to. Again there where a few quite spells.
The one thing I notice is when after going to a game I watch it back the atmosphere and noise seem alot quieter than being there