Nothing too fancy, just a few reasons. For me, I switch biases a lot and like the members almost all equally
Twice - I usually switch between Nayeon, Sana, and Jihyo (Basic reasons: they're the funniest to me, most endearing, and most attractive for me)
Seventeen - I usually switch between Hoshi, Minghao, and Dino (Basic reasons: they're the funniest to me and in Dino's case, most relatable for me)
All of the above are also the ones I enjoy watching the most on stage. I focus on them during group performances and look up their fancams. Sana and Hoshi are probably most consistently the ones I like the most though if I had to pick
Edit: Guys don't give good answers, this is supposed to be shallow/basic answers and now I look bad 
I promise I appreciate them for more than this
Maybe I am just shallow
