I don't have any favourite airlines, none of them provide a consistently excellent service.
The less worse ones are
Lufthansa
Emirates
I would add on BA, except the simpering 'thank you for all your hard work' annoucement to the cabiin crew at the end of longer sectors makes me feel like vomiting, especially as a number seem to race off for rest ASAP.
BA CC strikes and/or threatended strikes have caused me a lot of disruption in recent years.