Yap. I prefer Yuri. This is simply because :

• She is the more attractive of the two.
  
• She is more sensitive and feminine.
  
• Her expression whenever she applies facial mask is OHhhhh SOooooo VEeerrrry CUTE!!
  
• She shows more concern for her sidekicks Mughi and Nanmo.
  
• She is more rational.
  
  And Lastly,
  
  
• This look and pose was just too perfect.