@JFRMusic you have gotten a lot of great advice and points of view. I’ve cycled through some gear in my system, DAC’s, streamers, Pre’s, Amps and Speakers. I haven’t had the pleasure of having a Aurender Streamer grace my system, based on the brands reputation, one of the best in streaming / digital. I have had Auralic, Lumin, Node streamers, PC’s being used for streaming and ROON. I had all in one boxes, Lumin D2, P1, Node (my first) and separate streamer / DAC’s. Separate streamers made a difference, I compared a P1 using the streamer only to a stand alone streamer (G2) and even though the P1 is 3 - 4 x the price, stand alone streamer bested any other configuration. When comparing streamers my experience was the differences were subtle, even with big price leaps and different didn’t mean better. Upgrades to the streamer’s power supply, cabling, noise management beyond the streamer made bigger differences. Synergies between the Streamer and DAC are huge. If the manufacture of the streamer designed it work best with USB but your DAC is specifically designed for AES you won’t squeeze the best out of either. I ran through the above to highlight you have a great set up, carefully matched with synergy throughout the chain, one piece complementing the other. Chose a streamer that continues in that tradition, from the sounds of it, the less expensive Aurender model fits your gear the best from a synergy, cost, diminishing returns point of view. It’s no doubt a great streamer that if you upgraded other components would still be right at home.
Some of the best advice I’ve gotten from various audiophiles and dealers is that speakers have the biggest influence over your happiness. If you have speakers that you love, you then build your system around them. Once you get past speakers, and amp that pairs well, preamp that matches what you value sound wise. Then if you stream, digital chain would be the DAC being the most important piece followed by a streamer. Now, in the digital chain everything matters but you can get a solid streamer and DAC that won’t break the bank that sound great and where you’d have to spend a lot more $$ to see improvements. Thoughtfully and purposefully designed Streamers / DAC’s are as important as the price. Also don’t sleep on the interface / app that comes with the streamer. That’s a huge part of if you’ll enjoy the streamer, along with some of the features offered. Support for those is also key, companies that routinely update / upgrade their Apps. Aurender does, Lumin, Aurilac are 3 that do a great job with this. BluOS is a great app, if you slide into Niam, NAD or some other higher end brands that use it, it’s likely the best app out there.
Good Luck!