More SPL / weird phase vs less spl / common phase Question? Which is better?

I've been staring at this WinISD graph for two hours now and I have to make a choice and I don't really know which answer is the right answer.

1. Do I add in the mix a subwoofer that produces more SPL (Devastator)?

or

2. Do I pick the box that conforms more to other boxes in the phase category (sealed)?

And why?

First let me start out by saying that I already have 6-Pa460 in sealed boxes (RED) and 2-Fi audio 15Vx3's in sealed boxes (PINK). Now, I know Staying with all the same alignments has its benefits..... but so does gaining a lot of SPL and past that I really don't see too much of a difference in the other categories like power consumption or excursion which is all in check. I should be able to to get to a reasonable SPL level regardless of which choice I make also, I'm not trying to or need to shake my house apart, just need a reasonable movie level....and maybe a little extra.

So, BLUE and PURPLE are 8-JBL1240 Drivers.... one choice is all 8 sealed (BLUE) """OR""" all 8 in Devastator boxes (PURPLE) 6th order bandpass. Oh, and I have a minidsp2x4HD and a umik1 mic already, I'm not new around here.

Crossovers are set like this-
2-15Vx3's - 2nd order BW at 10Hz with 3000w - 8 cuft
6-Pa460's - 2nd order BW at 15Hz with 1500w - 20 cuft
8-JBL sealed - 2nd order BW at 10 HZ with 2000w -16 cuft
8 JBL Devastators 2n order BW at 18Hz with 2400w

Here is all sealed


Rectangle Slope Plot Font Line



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Here is the group delay for all of them


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And here is sealed with the Devastators


Rectangle Slope Plot Font Parallel

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