In case you've been living under a rock, Simon Cowell recruited two massive stars to join his panel of 'X Factor' judges. Britney Spears and Demi Lovato have both signed on with the U.S. installment of the hit singing series, and both of the ladies made their debut as reality TV judges this week. So, after getting a taste of Brit and Demi as 'X Factor' critics, who is your new favorite judge?

Britney Spears might look sweet as candy, but it's become clear that she will say whatever is on her mind, whether it's nice or not. It's actually refreshing to see someone as kindhearted as Brit really taking her 'X Factor' job seriously -- as we've witnessed in the past with judges like Nicole Scherzinger, crushing someone's dreams is not the easiest thing to do -- but tries to be nice about it when the time is appropriate. But then Brit can also get quite sassy, telling the really bad contestants things like, "I feel like I was listening to Alvin and the Chipmunks" and "I feel uncomfortable with you even staring at me." She's entertaining and insightful all at once!

Then there's Demi Lovato, who like her fellow judge Britney keeps her commentary honest. She has qualms about passing on a contestant if their voice isn't up to par, but she tries to maintain a sense of kindness while she lets people down -- that is, unless you're one of the many contestants who is just plain awful. As we saw during the premiere of 'X Factor,' she can also be very compassionate. When one contestant by the name Jillian Jensen spoke about being bullied and how much Demi inspired her, a teary-eyed Lovato walked up onto the stage and gave her a big old hug.

After tuning in, who has won you over as your favorite 'X Factor' judge? Vote for Brit or Demi below!

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