Forced to make a choice, then I would prefer the better Stereo Pair over a "lesser" Stereo Pair Plus Centre for both Music and Movies

So, a D7k2 Pair in your Option 1 ....... and a D8k Pair in your Option 2.

And to the OP.......a D7k2 pair will offer much better Audio Performance than your current D7k pair, wth obviously the D8k offering even more of a step up.

If I was spending your money, I would start there rather than Centre Speakers of changing your Processor, Best Bang for Your Buck is the commonly used term.

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