Which center channel?

I have dynaudio audience 52 for fronts and audience 42W for rears. I am trying to decide if I should go with a 42C or a 122C for the center channel. I watch about 70% movies so I would like something that sounds really crisp like the fronts. Would it be better to stay with a small bookshelf speaker like the 4 ohm 42C or go with the 6 ohm 122C? I am using an Outlaw audio 7125 amp to run the speakers now at 4 ohm so would need to integrate the center into my system.

Thanks