Buffalo Trace produced a single -- as in "one" -- barrel of each of these experimentals. The three barrels together provided 100 12-bottle cases (4 375ml bottles of each experiment), which Buffalo Trace directed (with distributor cooperation) to favored "best" retailers. Many of the bottles either went into the retailers' private collections, or went out the door to the retailers' best/favorite customers. Few were presented at retail.
I've related all that to try to dampen enthusiasm to 'get some'. It's already too late, since they were released about 2 months ago. Either you get extremely lucky because you know someone who has them, or you pay eBay prices. These simply ARE NOT available generally.
I spoke to Elmer T. Lee (retired BT master distiller) about them, and he implied that the only one worth tasting, anyway, is the one aged in French Oak. It is unique and good, he says. The Fire Pot is hard to distinguish from any other well-aged bourbon, according to Elmer, and the Double Barrel is over-oaky and over-aged, he said.
I've tasted an example of the next round of 'experiments' during a visit to BT's lab, and it was very tasty. Though I cannot divulge it's 'uniqueness', I will say that it is aged in a manner that will keep it from being called bourbon (at least, without a qualifier, a la "Distiller's Masterpiece").