Skilled Vocalists vs. Emotional Vocalists: Which do you prefer?

Kim Yeon-woo, Kim Bum-soo, Na Yoon-kwon
VS
Sung Si-kyung, Paul Kim, Jung Joon-il
All six are obviously talented, but
there is still a certain "vibe" or category to singers, right?
I used to prefer the latter, but after actually going to their concerts and hearing both live... the former completely dominates in every aspect..