Trying to choose between Brio Elex-R and Rogue Sphinx V2 &Audiolab’s 6000a (budget choice)

I am not familiar with all your choices. I have the Elex-R, the P6 w/ Ania MC coil and Aria phono stage. Sounds fantastic feeding my Rega RS7 speakers. The Aria is really solid...
Streaming became the issue for me: just never sounded as good as playing this vinyl kit. This has sent me down a digital upgrade path...

I had the Sphinx v.1 for a while. Was not terribly impressed with it. I think the preamp section is pretty good. I tried running the pre out into an Odyssey Stratos and there was a dramatic improvement. 
Not heard the others. 

There’s a Hegel H160 on US Audio Mart for $1600, which is a great-sounding integrated that puts out 250Wpc into 4Ohms so has plenty of juice to drive your silvers.  No phone pre, but there’s a new Cambridge Audio CP2 available here now for $148 that’s probably a good bit better better than most phono preamps built into lower-priced integrateds and may be good enough to delay dropping more cash on another phono pre for a while.  This could be a great sounding system, but one caveat is you’d need to get a set of RCA to BNC adapters as the H160 only has two analog inputs, one of which is balanced.  On the flip side, the 160 also has a pretty good built-in DAC so you could try the digital out on your CD-1 to the Hegel and see if there have been any improvements in digital processing over the past 20 years.  Just another potential option, and best of luck.