I hope I can see some explanation too on why you chose them and not just because they're you're favorite member.
My vote will be on HARUNA. The first time I watched a SCANDAL video, I immediately fell in-love with HARUNA. She always looks hot on videos, specially her body movements and lips when she sings, specially during the time of DOLL to Yumemiru Tsubasa. She looks kinda different now, still I love whenever I'm seeing her alive and in action.