Should I get a Roon Nucleus?

I agree with @jjss49 ​​​​​​.

I agree with @testrun. I switched over from an iMAC core host to a SGC i5. Stabilized the entire environment and got a nice little SQ bump with a deeper sound stage. Keep your BS as an endpoint.  Then later on add a LPS to the SGC.

@jbuhl bump in sound quality from only changing roon core? I get the stability part though….

bump in sound quality from only changing roon core?

Yep I think so.  I was comparing Roon side by side with my Bryston BDP Pi running MPD/Manic Moose and streaming Qobuz.  The Bryston bested the iMAC/Roon hands down enough so I was considering not anteing up for ROON.  Switching the to SGC brought it close enough that I opted for the ROON subscription.   Switched the Bryston to ROON ready, done. I think having the core running on a dedicated device is critical for squeezing the most out of ROON.  Note: Radio Paradise still sounds a tad better when streamed (16/48) directly off the Bryston. 

I second the comment "I would also look at a Small Green Computer"

I have their Sonictransporter and it is excellent. Great customer support, and the same or better functionality as the Nucleus (which is sexy looking, but overpriced imo).

I would get this bundle, which includes the Sonore Utrarendu (really a good upgrade): SGC bundle (click link) You can choose the size of the internal SSD drive you want (I have 2TB).

ROON is great—I can’t imagine life without it now.