If I do a quick poll of my bunker.....how much do I have of each? KC = 0. Lot B's = multiple cases. Of course, most of that is my SB I did several years ago. Its a unique pour.....but a SW 12yo none the less.
KC is a decent pour.....it was one of my early faves when I got into bourbon many years ago. But its $28 here and I got my SB of Lot B for $33.
Chuck.....I've done the comparison you're talking about. Blind with friends. The older version wins out. But the newer version is still good.
If offered either w/o knowing old or new, etc....I'd opt for the Lot B.