Well to be honest I think they both sing rather well esp Sunny, however I am basing this more on performance then quality. I can't say Jessica sings better because she gets more opportunities to sing then Sunny however, she is a more stable singer when the have to dance then Sunny.

Jessica- sings high chest notes, can sound a bit "whiny", not the loudest voice in SNSD

Sunny- strong voice and widest range of tone, but lacks control and stability on stage

I love Jessica's voice :)

oh man, i honestly dislike both of their voices but Jessica has more experience, while Sunny is mostly out of tune

what kind of question is this?
Jessica's voice is unique
Sunny's voice has nothing special- i didn't said she can't sing, she has a powerful voice but.. nothing special

not the best in snsd but better than sunny

i add this poll cuz there was an argue between 2 sones in here one of them say sunny sings better another one says jessica so imade this poll to sone deside who sings better

^to be honest they both are great singers but Jessica is more stable in performances. I personally think all the 5 top singers are great singers but I think it is a matter of stability on stage that counts.

I love Jessica's voice

sica..... sunny's voice is just cute... don't like it..

Sica