RE:Which group in SM makes the best and worst music?

I do not think the groups make their music by themselves. They probably share the same music division.

I don't know. I do know Don EXO, SHINee, and Red Velvet have most of the catalog vibes.

For me, Red Velvet is my most liked and NCT127 as my least liked sound

i like many sm groups so idk which one to answer