No I have never flown first class or business class ever overseas flights only in the states. But have family and friends who have and they rave about emirates 1st class experience. Normally they say flight is about 10K in 1st class for that leg. QR people have said is good but emirates people have been the most crazy about. Have flown on QR economy twice from houston about 3 years ago and service was better than when I used to fly out of Detroit via Europe in KLM. So definitely prefer to fly through DOH or DXB.