I quite like Wei Chen now. I've heard about him before and seen him on ads and stuff, but hadn't really paid attention until now. I still think out of the four, ZH is the best looking, but I think that in real life, WC has more charm and is cuter (乖). ZH... seems to be more quiet and less laidback... probably it's because he's still a new artist.
And yeah, handsome four! That was the other possible explanation that I forgot.