For K-pop:
Girls' Generation/So Nyeo Shi Dae
I know you like H!P and I think you'll like them. They are kinda compared to MM except they are more talented and not that cute/childish. You'll love their catchy tunes and incredible voices.
I uploaded their whole discography! Check it out!
Girls' Generation
Into the new world
Kissing you
Baby Baby
Other great
K-Pop artists:
Wonder Girls, AnyBand, Nell, KARA, Brown Eyed Girls, Epik High, The Grace, Loveholic, Younha.
For
C-Pop:
Rainie Yang, F.I.R.