Thunderbird has a very tight alumni network in China. Once I attended their montly gathering at Beijing a couple of years ago and was very impressed by the diversity. I think both schools will connect you with their alumni at your city. So you can meet with people and learn more about their experiences to help yourself make the decision.
关于HULT,有少少资料提供一下。因为他们写邮件还打电话让我申请,让我留意了这家学校。通过学校的ADMISSIONER,我联系了一位在读的MBA中国人。对方说,这家学校的规模很少,只有一个商学院,最初是由一间consultant公司创建的,现在是EF(英孚, ENGLISH FIRST)在控股。这个学校的MBA是1年制的,所以与主流的MBA不接轨,很难在美国的杂志上看到他的排名,相反,在欧洲的网站就有更高的曝光率。例如FT.COM(这个网站是我在WALL STREET 工作的同学推荐我看的,所以我觉得质量应该还可以)。