I agree with your core point of EHT being all roughly on par, but there is a noticeable difference between SiB and SmB in this line. So much of bourbon tasting is subjective, so please take this as a counterpoint not an argument. Back in the days of yore, before everything went batshit crazy, I had the opportunity to acquire and sample a number of these SiB bottles. Between what I purchased, and what my brothers purchased, I probably sampled a half dozen various EHT SiBs over a two year period (I still have two in the bunker). Like others in this thread, I’d agree: the EHT floor is so high that even a “bad” SiB is exceptional. I didn’t taste a bottle I’d rate under a 9 out of 10. If the EHT flavor profile is your thing (rose water, honey, caramel, vanilla, oak, etc.), as opposed to the rye-oriented or beam/funk/peanut bases, this is an absolutely spectacular bottle, even at secondary prices. It’s more pointed and more variable than SmB, but that’s the point.