I'm always up for any of the Mexican Jarritos sodas. And if in China, I'm a big fan of Wong Lo Kat, which though not exactly a soft drink, seems to be consumed as though it were one and its bright red cans are just about everywhere:
http://en.wikipedia.org/wiki/Wong_Lo_Kat
http://www.bjreview.com.cn/business/...ent_299229.htm