Would it be blasphemy to say that if you de-couple the streamer's true purpose of delivering a file un-altered to the DAC on the back end that the front end is what matters? For my money ROON does the front-end the best.
Now if you can find a streamer with a ROON core, do a blind test where the only thing you change is the streamer, your expensive Aurender streamer or any PC with a ROON client installed, can you actually tell the difference?
Theoretically if the streamer is not altering the file's contents the answer should be obvious.
So, what do your ears tell you (no cheating on the blind testing)?
In the final analysis the source file is what matters the most of all. Try some 384 Khz 32 Bit Floating Point (see DXD specification for details) files out to see what they sound like. On every single system they will improve the sound; better sonics make better sound not streamers.
Cheers