Re: SR-71. This is mostly from memory so I could be off, but at least some of it is backed up by some searching.
-The original batch was draft-only, was called SR-71, and was not barrel-aged. For reference:
https://www.beeradvocate.com/beer/profile/23222/91930/
Ignore all the recent check-ins by people not paying attention, and observe that the earliest ones (and only actual review) are from April 2013 around the time of the KBBS b1 release. Ratings were good, not spectacular. Note that there was a lull in reviews, followed by a couple in March 2015. Which is where this picks back up. Note the new, separate beer listing on BA, and when reviews start:
https://www.beeradvocate.com/beer/profile/23222/162502/?view=beer&sort=&start=475
Forward to March 2015. This beer hit my radar because it was on the taplist for Huna Day. Discussion at the time was basically that it was as described above and wasn't really moving the needle compared to the more hyped stuff like Mornin' Delight. Then the bottle release takes place and people find out that it's a "new" beer of the same name, rumored to be 2014 Assassin barrels that were not considered ready for release at the time. This is one of many theories about this beer now floating around, none of them confirmed. Others include that it has adjuncts like vanilla, or that it's not rejected barrels but ones that were considered particularly interesting and aged for longer for that reason. Who knows, but obviously a new BA stout from TG sent the hype train into overdrive. I never tried it at Huna Day as I didn't want to wait in line. Eventually did try it at Cycle BA Day, from a bottle, 3 years later in March 2018. It was good.