My husband and I took China Airlines from JFK-TPE-HKG twice in the past three years in FC. That was back when they were partnered with both Continental and Delta. They have now severed all relationships.
But, I would gladly fly them again. The service was superb, full flat sleeper seats and Molton Brown amenity kits. Food was delicious and authentic chinese. I highly recommend them. Lounges are amazing with delicious dim sum.