Basically, the question that I'm trying to ask is, "Who do you think is the biggest threat now, and could possibly reach SNSD's level in the future?"

I'd really like if you'd explain your answer below.

Mostly 2ne1 and F(x). They are both their biggest rival. 2ne1 in Korea and F(x) international.

I think 2ne1. They, like Snsd, are very popular worldwide. They are already on the same level imo.

For me, it is 2ne1. Here are the reasons:
- Both almost has the same popularity.
- They are on the same level.

I don't think groups like Sistar, f(x) or Miss A are on SNSD's and 2ne1's level already. Plus, people are always trying to compare these two.

Both almost has the same popularity,are on the same level,the group of corea :) I love snsd and 2ne1 so much

2ne1, if you look at it internationally it's obviously 2ne1, but GG is still on top though. Looking at their albums and singles sales 2ne1 is the only one who is close to SNSD.

I think it's 2ne1.

Ofc 2NE1, and recently they're getting more popular internationally, because their music fits America's style, especially.
f(x) can become rival only when they will get more attention from SM Ent...They only get them comeback 1 time for a year, no Japanese recently, no tours, nothing.....yeah there was a tour, but it was SMTOWN, in 5 years they still did not have a tour alone....
I'm happy those 3 are my fav groups.<3

2NE1 is really a potential threat they are a strong team and are apart reaching snsd level

2NE1, obviously, because they have a popularity that is on SNSD's level. They also have a bigger international influence throughout America and Europe.

No doubt it's 2ne1