Haylx rec's the Dr. Tim's One and Only as the BEST for BB's in a bottle (similar to safe start). You can get it from the company itself, or from the foster and smith website.
Next up in preference is Tetra Safe Start, which I've used with success as well (although Halyx has been studying these and keeping track of what works and what doesn't), so he knows more. :)
I've also used API Quick Start, but only buy what you need, because after 48 hours of being opened, the BB's in there are dead.
Also, let your tank ammonia get to about 0.25 before adding any of these, that allows the BB's from the bottle to immediately start eating and colonizing in your new tank. :)
I've missed the rest of this thread so I don't know what all is going on, but I saw your Safe Start question and thought I'd pass on some info. :)