Which digital input to use? Technics SU-R1000 or Technics SL-G700

First of all let me start by saying I've been an avid reader of the forums for quite some time but this is my first thread...

I have both the Technics SU-R1000 (Integrated) and the Technics SL-G700 (CD / SACD & Streamer).

I am using a Raspberry Pi running Roopieee with audio going out through a HiFiBerry Digi+ hat (optical).

I use this for Tidal / Qobuz and also my own digitised CD library.

I know that the  SL-G700 uses a dual mono DAC circuit (AK4497 from Asahi Kasei) but I am unsure of what the SU-R1000 uses.

Question is, which input should I be utilizing?

Digital in to the streamer with analogue out to the amp
Digital in to the amp 

Any opinions appreciated!

Thank you. 
I don’t think there is anything "proprietary" in the AKM A/D circuit that Technics is using. Just using the AKM chip. Of course, the power supply used and the input stage used affects the sound.......so, in that sense everyone one who uses a particular chip will have a "one of a kind....in house design".
@georgehifi I always find your posts very helpful and informative regardless of whatever misspeak takes place.
Your welcome (or should that be "you are" or even "you’re") who cares!!!!!!!

Don’t have autocorrect, and it get’s across even with misspeak.
But seeing it’s bought up yet again, I’ll react just this once.

You have to understand I’m an Aussie, and couldn’t give a ratz a**e, (an Aussie polite slang saying for something much stronger).
Things like colour is wrong in the US but correct here, UK and Canada???????
And seeing we were all once British subjects at the start I think colour is the correct way.
Here "they’re" is the abbreviation for "they are" (numerous folk)
"their" (singular person).
You Yanks always pull me up on it, and to be honest I couldn’t give a ratz ****.

Cheers George
Shouldn’t digital coax into the SU-G700 be the best option because it avoids the D/A conversation step from the CD Player or Streamer?  Meaning why feed an analog signal into SU-G700 just to be converted back to digital?

SU-R1000 (Integrated) and the Technics SL-G700 (CD Transport).

So yeah I would agree coax out to the SU-R1000.

Avoid the other steps.