I am a Korean Pop fan! I have been listening to this genre of music for more than a year, so I still somewhat new to its world, but enjoy it a lot.
Here are my top groups:
6 members: Leo, Hyuk, N, Ken, Hongbin, and Ravi
My favorite member of VIXX is definitely Hongbin!
EXO (Click either EXO-K or EXO-M at the bottom right corner [Korean or Mandarin]
Currently 9 members: D.O., Sehun, Suho, Kai, Chanyeol, Xiumin, Lay, Baekhyun, and Chen; but formally 12: +Luhan, Kris, and Tao.
My favorite would have to be Kai.
7 members: Chanwoo, BI, Ju-Ne, Bobby, Jinhwan, Yun Hyeong, and Dong Hyuk
This is a very new group so I am not quite sure who my favorite is yet, but I am leaning towards Ju-Ne.
And I also enjoy music from Microdot, B1A4, BIGBANG, U-KISS, SHINee, B2ST (aka BEAST), Infinite, 2PM, 2 AM, and Super Junior.