Between China and the CTA, I will choose China. Under the ruling of China, Tibet has progressed so fast. They have upgraded the infrastructure in the major cities such as Lhasa and Shigatse. There are highways, railways connecting mainland China with Tibet. Basic amenity such as school, university, hospital are all provided by the Chinese government.
The Chinese government is fair to everyone, you just have to be hard working then you will get what you want. On the other hand, the CTA does not work in this way. They work on nepotism. If you are close to someone in the CTA or you have a relative working in the CTA, you can also get a job and be protected even though you might have made a big mistake.
For the Tibetans who are willing to work hard to change their lives, China definitely is the right choice. China rewards people based on merit, not based on the relationship. Relying on the CTA is a waste of time and it is not worthy. The CTA does not care about the Tibetans and they never will!