From the review:
"My love for the SteelSeries Xai mouse is well known. It is of a quality that is rarely found in peripherals, and its greatness ranges across both hardware and software. However, the new SteelSeries MMO mouse has the same specifications and is World of Warcraft branded. Coinciding with the launch of Cataclysm, SteelSeries released a new 14-button beast that had me frothing to try it. In all my years raiding, I thought to myself, “I could sure use more buttons on my mouse.” So how does it compare to the Xai?"