Some comments on these chemicals:
Vitamin B-1 has been shown to elicit some root growth, but it primarily serves as a mild, but easy to absorb fertilizer. NAA is a powerful synthetic auxin, but be aware that it degrades pretty rapidly upon exposure to light and/or heat. I have been told by one manufacturer that a fresh batch, if kept refrigerated, will be active for about a year. Left at room temperature, about 6 month, and if gets heated to above roughly 80°F/27°C or exposed to the sun, it'll be "dead" in no time. I think that's part of the reason there are such mixed reviews of its efficacy - folks are working with "dead" product, because it's been on the store shelf a long time, was shipped too warm, etc.
I have stopped using SuperThrive or K-L-N (similar, but also has indole-butyric acid [IBA], another powerful synthetic auxin) in favor of KelpMax, which is a kelp extract that contains preservatives. The first samples I got were over two years old, but after one treatment, still caused my vandaceous plants (in baskets, so I can see the roots) to put out an average of 40 new root tips. For those of you outside of the US, it is sold as Kelpak - it originates in South Africa.