Best Kombucha to buy for Scoby

After less than a week of sitting out covered in a paper towel, the local Buddha's Brew Kombucha has a nice scoby pancake forming. GT's has a thin film at the top which I suspect will eventually develop a pancake. If I had thought this experiment through I would have poured these kombucha's into wide mouth jars since I really doubt there is a way to extricate gracefully the kombucha scoby that has formed in the Buddha's Brew bottle. On the other hand being someone almost incapable of labeling letting the plain kombucha sit in the original bottles is great for knowing which is which. Next time I make kombucha I am totally making it from a scoby developed from a store bought bottle of raw kombucha.

It has now been over two weeks since I started my kombucha from the mother given to me. I really want to taste it, but I'm resisting. I should probably look into giving it away...