Anthem MCA-2 or NAD C370 ?

I am considering purchasing one of these two amps. I know the NAD is a integrated and I think the Anthem is a power amp only. I'm currently using two NAD's (a C320BEE along with a C270 power amp) and am pretty happy with the results. But in order for me to "split" my existing system into two serparate ones, I would like to use either the MCA-2 or C370 in my main system. It would be used as a part of a biamped system to run my Totem Sttaf's. Any suggestions would be greatly appreciated.

Why biamp?
Get the MCA-20, just picked one up on Audiogon. It's barely broken in and already sounds fantastic. I also have an A5 that sounds fantastic.