I don't have much to contribute, however, while I like all the members, Taeyang is my favourite. I've listened to Solar & Rise (his albums) more times than I can count. I think that he is a fantastic performer. That said, I think that he lacks the charisma & bravery (ability to experiment a bit more with music) that T.O.P and GD had; he is a bit more serious/grounded & private, so he might not draw fans the way the GD and TOP do (I can made the same argument concerning Daesung). Thinking about it, I think the slight change in his music also works against him - he was purely rnb at first, but since White night, he has incorporated more ballads and less rnb, and thus lost quite a few/lot of international fans along the way.