Today, 5 Bowmore in direct comparison:
https://www.whiskybase.com/whiskies/whisky/191074/bowmore-21-year-old
88P - nose very very cool. In the taste unfortunately too spicy / herbal & dirty.
https://www.whiskybase.com/whiskies/whisky/179590/bowmore-21-year-old
90-91P, depending on the shape of the day. Nice mix of old and new Bowie parts and the sherry is nicely balanced.
https://www.whiskybase.com/whiskies/whisky/189257/rumours-1990-uwc
90P - wonderfully fruity, slightly smoky, and a nice long finish. At any rate, the least violets of all 5 today. Unfortunately not exciting enough to reach the 91P today.
https://www.whiskybase.com/whiskies/whisky/43882/bowmore-1998-twa
90-91p. In terms of rating, I put it on the same level as the 21y Aston Martin because it suits my taste exactly. Slightly sweeter and less violet than the 21y AM. At the age of 15, however, he does not have the complexity for this.
https://www.whiskybase.com/whiskies/whisky/133089/bowmore-1990-wy
90p
Best nose of any Bowmore tried today. Extremely fruity and tops the Rumors 30y again in the nosing. Unfortunately, the violet notes dominate in the Taste, which do not suit a Bourbon Bowmore at all.
My conclusion, unfortunately I could not identify a clear winner. Except for the 21y Wine Cask, they are all very close.