don't look at tufts.....look at most of the ivy leagues...stanford...the UC system....Johns Hopkins SAIS.....University Hawaii.....Michigan University Anne Harbor. University of Wisconsin Madison, University of Washington Seattle... Maybe Boston College....NYU......Duke....Georgetown...WUSTL.......USC.....UNC Chapel Hill....Rice.....Boston University....MIT....and to be frank no top phD program in America will take a westerner who went to a Chinese university that wasn't the Big 7(Renmin, PKU, Tsinghua, Fudan, Shanghai Jiaotong, Zhejiang University, HIT) BUt only renmin PKU or fudan possibly tsinghua for Ir for humanities/social sciences. If you really want to go to a us university for phD stick to western schools. The quality of education is not comparable. In America Chinese universities and students not from "western re-organization" group are not what you would call....most favored areas. As someone who gives interviews for a top American universities to potential chinese candidates for the school's undergrad and grad programs in Beijing and sometimes in Chengdu, Shanghai, and Harbin its very obvious why we are taught to look at their applications not with a grain of salt, but with an entire salt mine.
Also CHinese EConomics taught in CHina is actually classified as Marxist Economics.....thats the theory of what you would be studying which is what SOAS supposedly has. If I remember correctly Stanford Harvard Yale and Columbia have centers devoted to Chinese Economic policy....thats what you are interested in. JHU just got a new China center that is devoted to policy (foreign economics legal etc) USA schools are indeed expensive but the level of education is incomparable.