for me, it's not that i don't like ohno as an actor personally or anything, because he does act good! i enjoyed maou so much (despite all the killing in the finale
). but in general, i also agree that they all are such good actors (in their own way). the real reason as to why i prefer jun and nino would probably be because of their appeal (physical appearance), along with their acting. i personally find jun and nino really good looking (jun especially, but i won't go there now, lol), so that adds on to their acting (because they really do have the strongest acting skills, at least to me) so i enjoy seeing them in anything. they both really move me. maybe i like them for such shallow reasons such as appearance and stuff, but i can't help it.
i dunno if ohno moved me in maou, but i really got into his acting while watching it. like i was actually scared and intrigued whenever i'd see him in a scene. jun moved me SO much towards the end of Smile (i cried the hardest i ever did while watching ANYTHING, but maybe it's cause i'm biased towards him the most, i dunno
), and nino was brilliant at the end of ryusei no kizuna (he also moved me in yamada taro, but in a different way because it was just a cute drama
).