Thick or Fit?

Hey there, I got a quick question for the more experienced one out there 😁.
I have the option to book a sessiob with a very thick girl or a sporty girl with still some nice curves but her thighs are way slimmer and more muscular. Which one is better for a scissor / facesitting session, I really can't decide..
(The two girls are Curvesandchaos or sidney thunder for those who know them)