I've only tasted regular ol' roobios honestly. I quite like it, but I don't make it very often. I'm very interested in trying the green stuff and I just got some roobios blend in from Adagio and I'll be seeing how it is in about two weeks.
As for myself at the moment, I am drinking a few infusions of Kenkoucha (健康茶) which means "Health Tea". I bought this in Tokyo on the cheap at a department store (Tokyu Hands) and it features the Kumamon mascot of Kumamoto Prefecture on the tin. The tea itself comes from Minamiaso in said prefecture. I do wish I had picked up TWO since it will be another year until I am back in Nippon. If you like grain tea (sobacha, mugicha, hyeonmi cha, etc) then it is highly recommended. It has those lovely roasted bold flavors mixed in with a persistent sweetness and no bitterness to be found whatsoever - a very clean cup of tea. In the tea you will find a blend of 24 ingredients with things like Barley, Job's Tears, Black Soy Beans, Dokudami, Houjicha, Loquat, horsetail, goji berry, gynostemma, mulberry leaves, among many, many others. Very delicious if you ask me. Here is a picture of the contents: