I always use Emirates - Always found them to be a good reliable and fair priced airline. I used to use KLM a lot as well - Quality is not as good but still quite acceptable but the price was a little lower. I stopped using them so much when I moved to Manila and suddenly a Eurpoean-based airline didn't work with my other travel plans.
Nice thing about KLM is that once you have done your 1 hour jump to Amsterdam, it's all the way on one flight (about 13 hours). Gives you time to watch a few movies, have a meal and a few drinks and have a good sleep before landing. A problem with the middle-east airlines where you have 2 flights of about 7 or 8 hours each is that you just get off to sleep and then they are waking you up for breakfast or dinner before landing.
