Worth noting that Infinity's Duolon really plays differently from all the rest. He tends to build meter, only dealing massive damage when he uses his SDM. He doesn't use the same tricks I keep seeing in the older videos of Duolon either, mainly his j.B, f+B, and the f+A, "f+B".
Tenka's Shen and Duolon are pretty good as well. While his Shen is really just well executed, his Duolon gameplay is also unique in a sense.