Both are great though

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personally, i find Sooyoung better and i'll explain why

Sooyoung fits all types of dancing...she's charismatic and her moves flow very well

Yuri is only sexy..that's it.....

Let me break it down:
link
Yuri- she has better control over her body, more consistent and has more stamina. Yuri is more fluid in her dancing and she is able to keep the same pace of her dancing throughout the entire performance. Her movement tend to be very precise and she doesn't over power her body movements

Sooyoung- She will get tired by the end of a performance, she isn't nearly as consistent as Yuri in that there are more days when she isn't at her best than not. While Yuri is the mistake Queen, she better able to regroup herself. Sooyoung doesn't have the same amount of control over her body as Yuri. If you watch the link when they do the "oh oowae o" look at htier arm movements, she isn't controlling her body as well and thus makes her seem a little sloppy. Another example is the spin, Yuri, Hyoeyon, and Yoona are the only ones who were able to spin and have good feet placement without falling behind. Lastly Sooyoung isn't nearly as fluid she compared to Yuri is stiffer and it shows during the cobra dance.

You have as of this link

Hyoyeon
Yuri
Yoona/Sooyoung- Yoona is starting to understand her body placements and having better control over her body, but Sooyoung is more interpretive and sometimes more consistent
Sunny/Taeyeon- Taeyeon isn't as consistent and not as fluid as Sunny but has more control and power in her movements...so here they kinda tie
Jessica/Seohyun- I give Jessica more credit for being on point although Seohyun is way more consistent
Tiffany

There is a reason why Yuri is 2nd best at dancing and always is in a dance battle despite her tendency to make mistakes. If you want to know the difference between any dancer in SNSD look at Mr.Taxi, IGAB, and Genie...those dances really show who has it and how doesn't.

i agree with pretty_angel92 ^_^ ..

Yuri

yuri though she makes more mistake

Why is the poll 27 days long?

Sooyoung looks sexier while dancing. She's more confident and has better stage presence.

They're both good just Yuri is better

Yuri :))

Yuri is much better

:>