Xemnas- I love his voice, I wish I sounded like that all the time. He's also got an awesome look, especially Final Form Xemnas, and his lasers are awesome. He's so menacing, much more menacing then Xehanort who I feel is just a typical cartoon villain.
Xigbar- As if, who couldn't love someone who is already half Xehanort? He's definitely scheming, and I can't wait to find out what.
Xaldin- I don't really care much for him, he was more of a background character.
Vexen- I don't really care much for him either, he encompasses a mad scientist but something about him just seems so...boring.
Lexaeus- WHAT DOES THE SCOUTER SAY ABOUT HIS POWER LEVEL!?
Zexion- He seems to be this poor kid who got thrown into something he didn't really belong in and as a nobody he was definitely plotting. I can't wait to see his redemption as a helper of the heroes in 3.
Saïx- I both love and hate Saix, he both seems like he remembers his feelings for Axel but like he's using it to manipulate Axel into working for the organization.
Demyx- I felt more bad for Demyx in the manga than I did in the games because in the games he seemed like he was strong but wanted to not do any work but in the manga he actually seemed to have a heart and that he was an unwilling participant in the organization, like he was just brought there because he was a strong nobody.
Luxord- Luxord doesn't have much spotlight in the games, but in the manga I absolutely loved Luxord, especially when he was sent to wonderland with Roxas. He's been the most expressive member thus far.
Marluxia- I loved him as a villain in CoM, any graceful assassin is cool. IDK why people associated him as gay, apparently they've never seen Japanese media before...ANY CHARACTER WITH A SCYTHE INSTANTLY GETS FAVORITED, Duo in Gundam, Soul/Maka in Soul Eater, Arumat P Thanatos in Star Ocean. They're the most inconvenient weapons IRL but in fantasy they're just so cool!
Larxene- Perfect for those who love tsundere women, a nice balance between crazy and cool. Definitely not waifu material, though.
My man Luxord, has been a favourite since the beginning. Just love his mannerisms & no nonsense attitude. Obviously wished he had more of an arc, but at least he's not completely dead ( I hope)
Other, I like a bunch of the members. Demyx is awesome, Larxene is a funny bitch, Saix rocks that long blue hair & Xigbar is hysterical.
Well he was in the Pirates trailer, and I love him in the manga, have you read that? My favorite face he makes is this one:
http://4.bp.blogspot.com/-X6ZSm8EnZ4g/U2wZJGSND8I/AAAAAAAADPY/9kqFIXY9uvI/s1600/Luxord+1.jpg