Well I have only traveled once so far and it was from Islamabad to Abu Dhabi 6 years ago on Etihad airways economy class.
Really liked it. Clean aircraft, nice food, nice seats, friendly staff etc.
One thing I found funny was that people most probably waited for the toilet in the aircraft instead of relieving themselves in the waiting area because the moment we took off, the toilet was constantly in use, for 3 straight hours, till we landed.
If I have to rate it, would give it 8.5/10.