A/D converter performance differences between Crown DCIn amps and BSS BLU-BIB?

(Note - also posted in JBL Pro and BSS, because products from all three are potentially involved)

I am setting up a 7.1-channel system with 7 channels of JBL 7-series speakers, processed and powered by a DCI8|600n, as well as and four subwoofers (fed from 1 input channel) powered by a DCI4|1250n. The amps are in an different room from the surround sound processor because of their very loud and obtrusive fans.

I could not find apples-to-apples specifications for the A/D converters on these Harman products, and I'd like to optimize the system's SNR. The two possibilities to get signal from the processor to the amp are:

1) Long (>25') 8-channel wall-rated balanced analog snake from the SSP to the Crown amps' analog inputs. (Or, more likely, all 8 to the 8|600n and then a short BLU-link connection to the 4|1250n, but same basic idea: direct analog in to the Crown amps, using Crown DCIn A/D converters).

2) Short (<3') analog runs from SSP to BSS BLU-BIB, two long (>25') wall-rated cat6 for the BLU-link daisy chain.

Should I expect any SNR or other performance differences between the two scenarios? Cost difference is nominal but actually favors the BLU-BIB: I have one of those but I would have to buy bulk wall-rated analog snake cable and XLR connectors for the surround processor end.

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