The Diplomatico Exclusiva Reserva has been on of my most favourite rums ever since I first tasted it four years ago. According to the Distilleries Unitas S.A. (DUSA) website, the rum they produce is distilled from “honeys derived from sugar cane” and fermented molasses. All of the stills and distillation kettles are made from copper. The website also makes it clear that flavouring and aromatic agents are used in the production of their rum, as this statement on the website attests:
“Only high purity distilled alcohols and rich aromas and flavours are used to manufacture rums…”
My feeling when completing a review is that the spirit should be judged on its own merits, rather than prejudged by my own misconceptions about how it should be produced. My Judging Panel agreed, as we declared Diplomatico Exclusiva Reserva the number 2 rum in the entire world:
# 2 – Diplomático Reserva Exclusiva
This is definitely a favourite of mine for sipping and for mixing, and still three years after my original review, still one of the best rums I have tasted.
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The 
Earlier in my countdown when I introduced Ron Zacapa Centenario (23 Solero), I spoke of 
The El Dorado 12 Year Old Special Reserve Rum is blended from aged stocks (the youngest being no less than 12 years old) from the original Wooden Enmore Coffey still, the original metal Diamond Coffey still, as well as from the ancient Port Mourant double wooden pot still which was used to produce ‘navy’ rum for the English Admiralty. All of the Demerara Rum produced by El Dorado is aged exclusively in American oak (bourbon barrels). Demerara Distillers Ltd. (DDL) has built a reputation for outstanding quality. Their use of old traditional stills in conjunction with modern stills and distilling techniques have helped them earn world-wide acclaim for their Luxury Cask Rums.
The rums of 
The Rum Howler Blog 