Dueling Shows: With Macross Zero. Both series were 5-episode CGI sci-fi air combat OVAs that were released from 2002 to 2004 (Macross) or 2005 (Yukikaze). The winner differs on region:
In the West, Macross Zero definitely seemed to be the winner. Many Westerners who watched Yukikaze loved the air combat but were put off by the characters and found the plot confusing. It earned the derogatory nickname of Brokeback Air Force. As for Macross Zero, it was helped by the fact that Macross & Robotech have a long history in the West, and the plot was much easier to follow.
In Japan, Yukikaze appeared to be the bigger winner. It won the prestigious Tokyo Anime Award for Best OVA twice in 2003 & 2006. The main complaint Westerners had about the show, which was the hard-to-follow storyline, was probably alleviated by the fact that the novels are extremely well-known in Japan and most viewers watching were probably already familiar with the books. As for Macross Zero, it got largely overshadowed by its successor Macross Frontier (though Frontier was also quite popular among Western viewers).
No Export for You: Despite being untranslated for years, the first and second novels (which the anime was based on) have recently been translated and released in English. However, the third novel, "Unbroken Arrow", was written in 2009 and is not part of the anime; whether it will make it out of Japan is yet to be seen.
Sequel Gap: Yukikaze was published in 1984. The second book, Good Luck, Yukikaze was published in 1999, a fifteen year gap. The third book, Unbroken Arrow, was published in 2009, a ten year gap. Needless to say, Chohei Kambayashi takes his time with this series.