Lots of options here. My vote would be hold off on the center, run things in phantom mode, and spend the extra on the EP350.

Is music mostly in the two-channel realm?

Although I've never heard the EP350, based on what I've heard from other members, it'll provide good slam for movies while remaining exceptional for music.

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose