Do I have enough power?

Actually, I already have the Cronus Magnum and I am contemplating getting a pair of the Mani-2's. It's good to hear how much you guys like the Mani-2's in general though, because I'm still not completely sold on them (I'm considering the Totem Hawks as well, and other speakers). I have the Rainmakers now, and the Hawks sounded very nice to me. I'm mainly looking at floorstanders, but I assumed that the Mani-2 might have a very full sound despite being a bookshelf speaker.

I also have an NAD C375BEE integrated amp, rated at 2 X 150W into both 4 and 8 ohms. I thought my Rogue Audio amp was much better, but would the NAD's higher power rating make it a better match for the Mani-2's?

Jerroot,
The main reason I am not completely sold on the Mani-2's is only because I haven't been able to listen to them (my Totem dealer doesn't sell the model). I know some will say that you shouldn't consider a speaker without auditioning it first, but I already know that I like the Totem sound and given the things I've heard about them, I can only assume that I'd probably love them. However, not having a way to hear them still creates some inherent doubt. Additionally, I have heard some people say that the Mani-2's can be a challenge, just like you said. I'm looking for something with a strong midrange + midbass that can produce a great focused image. The Hawks seemed to satisfy those desires above what my Rainmakers can do, but I'm curious to know how they would compare to the Mani-2. How would you describe the Mani-2 sound, and what challenges did it present?

What kind of distance to the wall do the Mani's need to sound decent? That might be a problem in my room.