What is it about the Partagás Serie D No. 4 that’s made it the most popular Cuban cigar in the world? Is it the eye-catching red band? Is it the cigar’s reputation for being more full bodied than most other Cubans? Whatever the reason, this perennial crowd pleaser maintained high quality this year, rising above other Cuban cigars for its ability to consistently deliver a flavorful smoking experience, despite its high production numbers. The Partagás Alphabet Series started in the 1930s with many different sizes, but by the 1970s, the Serie D No. 4 was the only remaining remnant of the line. Then, in 2005, Habanos revisited the series, eventually adding four sizes. The red bands haven’t really changed much over the years, and yet the cigars, with their simple, streamlined lettering still seem fresh and modern. Part of that has to do with the introduction of the tubos, which are sold in handy three-packs. This red-on-black presentation gives the brand a sleek appearance and was a smart marketing decision by Habanos. Smart packaging only goes so far. The Serie D No. 4 lives up to appearances with its explosion of flavor from the first puff, showing a palate of leather, minerals and wood, sweeter notes of orange and vanilla, as well as a lasting hazelnut finish.