Please make a detail comment , provide a links and proof. So your vote can be count^^
Picture is a FanArt(Paparazzi)
Thank you :)

^oh you had my next idea XD. But I am happy if my series of countdowns inspired others to take their polls "more seriously"

But this is hard!! but let me try and be as specific as I can it could only be (for round one at least):Seohyun,Sunny, or Sooyoung. But you tell me which you think deserves this title

Seohyun- She can sing,dance, model, CF, speak languages, and is very book smart. I would say she is the most talented because she can do alot of things that Sunny and Sooyoung do ie has more basic understanding of languages (Chinese is one she can be basic in more than the other two), she does more CF and modeling than both of them. The only thing she lacks in is variety talent, if she did I would crown her as the most talented. I am not using the SM ranking list for this because its not official (found out about that)
link:link
Seohyun work in SNSD (scroll towards the bottom for proof):link

Sunny-she is next runner up in the "can sing and dance" department however she is next because she has "labels"behind her name. What do I mean? She is the only member to get a nomination for singing and acting in her musical "Catch Me if You Can". She is called the Variety Queen which itself is a big merit. The only member to MC by herself. All of things are things that only Sunny can claim as hers. I can't put her first because although she has more "labels" behind her name in the "group of SNSD" Seohyun shows more work and talent within not without.
link:link (scorll towards bottom)
link of variety queen:link

Sooyoung- Although last certainly not least. She is third because she doesn't have a good niche in the "group of SNSD" she is more talented (her own merited talents) outside of SNSD. She has done (out of the three) the most dramas but that is where it stops. She doesn't really do something that either labels her or something unique to her hold on let me think. She did write a song (but so did Yuri), everything about Sooyoung is so well rounded that she doesn't really excel at anything.
link (scroll at bottom):link

So this is my list of who could be the "most" talented I have (through my series of writing this comment) narrowed it down to Seohyun because she does more for her talent in SNSD (which is important since she is part of the group) and outside of SNSD (modeling and CFs).

Is this good enough?

Seohyun is really the only member who can sing and dance well. Second would be Taeyeon just because of her voice then Jessica because she can sing, act, and dance when she isn't being lazy. Then Yoona because she can dance and act.

Taeyeon's incredible vocal can beat anyone else.

^but all she can do is sing right?

well I guess if you give them grades for their different talents, Taeyeon's singing can still make her rank #1.

If this question is who is the most multi-talented, then it's probably Seohyun and Sooyoung.

I wonder who voted Tiffany, Yuri and Yoona. Did they read this question as "who is the least talented"?

^ that is why this question is based on comments

Ok I'm giving them grades again:

Member Singing Dancing Overall
TY 9.5 6.8 16.3
JS 8.2 7.0 15.2
TF 8.1 6.5 14.6
SH 8.0 7.3 15.3
SN 7.9 7.5 15.4
SY 6.5 8.6 15.1
YR 6.1 8.7 14.8
HY 5.3 9.4 14.7
YN 5.0 8.5 13.5

Rank
1. Taeyeon
2. Sunny
3. Seohyun
4. Jessica
5. Sooyoung
6. Yuri
7. Hyoyeon
8. Tiffany
9. Yoona (even if she's given 1 priority point for being "the face", she's still #9)

^so that is your ranking, just based on singing and dancing? Not a bad list but a bit strict don't you think.

Seohyun - learn many languages,dance well,have a nice voice,can play piano , guitar.

vinxinc : Taeyeon just can sing.

we're having a similar countdown, seriously -___-

^yeah I told Josh about it but it could be interesting.

Gotta rank them and who has the lowest number is the most talented
Tae: S: 1 D: 8 = 9
Sica: S: 2 D: 6 = 8
Sunny: S: 5 D: 7 = 12
Fany: S: 4 D: 9 = 13
Hyo: S: 9 D: 1 = 10
Yul: S: 6 D: 2 = 8
Soo: S: 7 D: 3 = 10
Yoona: S: 8 D: 4 = 12
Seo: S: 3 D: 5 = 7

Ranking:
1. Seohyun
2. Yuri and Jessica
3. Taeyeon
4. Sooyoung and Hyoyeon
5. Sunny and Yoona
6. Tiffany

What i actually think:
1. Seohyun
2. Yuri
3. Jessica
4. Sooyoung
5. Sunny
6. Taeyeon
7. Tiffany
8. Hyoyeon
9. Yoona

^your data isn't the best way to go about this to me, because that mean who ever has the most high and a most low number will be the winner.
Taeyeon:1 in sing +8 in dancing=9
Hyoyeon 1 in dance +8 in singing=9
Yoona:9 in sing +4 in singing=13
Tiffany 9 in dance and 3 in singing=12

Sunny:5+5=10
Jessica:7+2:9
Yuri:2+7=9
Sooyoung:3+6=9
Seohyun:4+6=10

so according to your math:its Taeyeon,Hyoyeon,Jessica, Sooyoung, and Yuri. who will have the least number at 9, followed by Sunny and Seohyun at 10, Tiffany at 12, and Yoona at 13

She can sing and play instruments very well and her dance skills are good

KippyGirl : Sooyoung is 6th in singing.

I think talented means something that they can do since they are young and with little practice they become great, so i pick taeyeon cause she is great singer, hyohyeon great dancer, and yoona great actress..

I think all of them can do many thing (sing, dance, act, speak many language, mc-ing) because they are practice, but can not mean great