My wife and I chose Viking - and, specifically, their "Imperial Jewels of China" itinerary, for our first trip to China. Overall, we are glad we did so. Though it was not without concerns and drawbacks.
To be clear, the experience of visiting China for more than two weeks was fabulous. We have been fortunate to travel well. This was probably our most interesting, brain-stimulating adventure. The scope of change and the pace and magnitude of development are astounding. As are the many inherent contradictions.
While both my wife and I wrote extensively about our travels and observations, let me limit this to our Viking experience. Much of this review will focus on the shortcomings and concerns. But let me be clear that our experience was very positive in many, many respects. We were perhaps more adventurous than many in our group; but not adventurous enough to tackle two weeks in so foreign a place as China entirely on our own. Viking provided the opportunity and the structure for us to have this experience.