Best China made super integrated amplifiers

I am interested in trying the China made super integrated amplifiers and need some advice on which is the best and most reputable. I am attracted by the convinience and the powerful wattage of these amps although the best would be to have pre and power setup. The model I have in mind are Dussun v8i, Xindak A600, Shanling A3.1, Jungson JA 99D class A and AB version, and Shengya A203mk. I will use it to drive my Vandersteen 3A sig speaker. Music played are mostly jazz,vocal and classical.