For me it would have to be Sora. I loved the way Sora looks in some of the good cut scenes and his voice is hevnly. Both in the english and japanes version. I like the jap voice when he sings better though.
Hey. I'm masterheart. I thought i would drop a line and say hi and check out this site cuse i've seen there cut-scenes a bunch on youtube.com. My birthday was today so i got a bunch of stuff. I love kingdom hearts and youtubes Kingdom Hearts parodys. Like 3 fools and a microphone is the best one there. But i digress.