Actually I opened the Millonario 15 for Christmas. A good rum, very sweet, reminds me of Z23. I opened at the same time Plantation Guyana, which surprised me with a scotch-like taste, I was expecting a taste close to ED, and Renegade Panama 1997, a fantastic rum.
Finished open bottles of Plantation 20th and Diplomatico Exclusiva Reserva. The 20th is surprising, the only rum from Plantation that I've tasted with a vanilla taste, still very good. The Diplomatico is incredible, a flawless rum to me.