Nice starter, rises well, very stable. Nice flavor, very stable. Rises well, flavor is acceptable. Makes bread better than what you get in Safeway, but with so many other truely fine starters available I would not wast my time with this one. This is the only culture that does not take to being mildly neglected when left out.
Molds quickly invade and it has happened several times.
The second packet was activated the same time I got Carl Griffiths culture and his is going great guns. It is fragil and must be constantly checked for contamination. When not in use I would not store this one more than a couple weeks without refeeding. Those from SDI take all sorts of abuse. I frequently go months without paying attention to my refrigerator cultures.