I purchased this rum for my wife for Christmas in 2015. I was quite surprised to discover that she had also had a bottle as a gift for me as well. Hence the 21 year old twin reference. A friend of mine saw the picture I posted of the bottles and said "Every sailors dream, 21 year old twins". He is a rum lover as well as a sailor so he probably lived the dream. Having a 12 and 15 year old on my bar shelf it was inevitable that the comparison be made. In fact, I picked up a 8 year old to mix it up a bit. I did a sampling of all four and made it a blind sampling for my wife. The smoothness of the 21 stood out among the foursome. All were sampled on ice and neat.