From a pilot's perspective it's one thing, from a passengers perspective it would be another.
For pilots one would have to include Britsh Airways, Air France, and Lufthansa since they have a good combination of short haul and long haul flying with very diverse route structures. I think it used to be KLM that paid pilots based soley on longevity. The younger guys tended to fly long haul and the older guys who got tired of that would fly short haul since there wasn't an issue with pay. Personally I quite like that concept because some of these Ultra Long Haul flights are a killer and I really don't want to be doing them when I'm 60 years old.
Cathay Pacific, Singapore, and Emirates are all widebody airlines so most of their flying is medium to long haul. Emirates scores good from a pilots point of view in that you can usually average about one landing every 5-7 hours of flight time. That means personally getting about 4-8 landings per month as the pilot flying. No issues with currency that way. It scores bad in the fact that there is a lot of night flying which is quite fatiguing.
I personally haven't run across a better in-flight entertainment system than what Emirates has ( and yes I've ridden on Cathay and quite few other foriegn airlines ). Roughly 600 on demand channels of movies and music to choose from along with video games for kids ( and adults ). The personal cabins in first class are awesome and the new lie flatish seats in business are quite good. Last time I rode on Cathay they weren't even close to EK's standard for IFE or seating, but I know they have a newer product which I haven't seen yet. I haven't ridden on Singapore so can't compare, but I know it's quite good. EK can be hit and miss on customer service with both ground staff and cabin crew. Part of that reason is the very diverse national and cultural differences among the staff one runs across. Cathay and Singapore tend to be more dependable since it's primarily Asian staff.
Virgin Atlantic should get good mention as they have some nice amenites on their long haul fleet, massage therapists being one of them.
Typhoonpilot