So I personally only took the Vienna to Abu Dhabi flight and I wrote about it on
my blog. If you read the report, it should give you an idea about the hard product.
My dad took the AUH-VIE flight and said that the seat was extremely uncomfortable for sleeping - really no surprise. In addition, the flight sometimes has to make an extra stop en-route if the winds are bad. If you can I woud avoid the AUH-VIE flight, the VIE-AUH is OK as it is a day-flight. There is no IFE but they do have WiFi and Entertainment on your personal device if I am not mistaken.