Agreed, though I'd lean towards After School more than f(x).
After School is definitely up there
I like that their discography is really variated.
I think it's very easy to pinpoint which groups have a solid discography.
Since like 75% of the k-pop groups tend to release killer title tracks and lackluster album tracks.
Summer not too much on SNSD I got a boy mini was flawfree (once you cut out the fillers)
That entire album was filler including the title track. Almost their entire Korean discography is useless except from like maybe half a dozen songs. Why can't they just release more music like their Japanese albums? They'd genuinely be perfect if they did. It isn't rocket science.