I prefer Black Kyurem's design, although they're both very good. I also preferred Black Kyurem's Gen V animations. B is also unique among most box legends (other than Suicune, who was always an oddball in that group) in that not only is it not Uber, it was also UU for a brief period. Sadly, UU was the only time it was actually good.
It's a shame B is so shitty competitively. It's pretty much my favourite box legend.
