Turkish Airlines is growing very fast -- every year over the past 4-5 years I am surprised to see their routes being more and more plentiful. At the same time though their attention to detail and ability to offer good service is impressive.
I have flown both economy and business class on their flights and have been impressed by both. Great food, and nice planes and crew.
Then comes the Turkish Airlines lounge at the new Istanbul airport. Oh my! What an experience. The food and amenities are awesome. I highly recommend it!