Junsu, JoKwon, SeulOng, Daehun (bowl cut hair guy ...totally don't dig his hair) all have good vocals. Amazing actually. hehe.
As for dancing and rapping gotta give it up to Jay. ^^
Taek is just my favorite for his personality and rapping. lol. Khun is just a cutie, but I'm not sprung or in "love" with him like some girls are.
They actually need to work some more on their syncing sometimes. During their dance performances, you can tell some of them are off, but it's okay...I'm sure within time they will get much, much better. It's JYP Entertainment afterall. The big guy knows what he's doing.