Streamers rabbit hole

Auralic Vega S1

Based on your budget and system description, I think your best bet is HiFi Rose. If you've already got a great DAC choose the RS130.  If you want one with a great DAC included (that can also serve as preamp and/or system DAC) it's the RS151.  These units are both amazing performaners for streaming HiRes audio...like Qobuz or Tidal.  As a "bonus," the massive HiRes touch screen display gives your sytem a beautiful "now playing" display.  As you live with the piece for a while you'll discover that that there are a lot of other capabilities built in.

I own a Moon 280D that cost me $4,000 before tarrifs. It has a great interface and a lovely, musical sound. I compared it to a few streamers selling at more than double the price and couldn't hear any difference. The  280D is pretty stripped down. No screen in front, just lights, which I can read fine. No headphone jack. Just a very musical sound. I know you've gotten a lot of input. My final piece of advice is to go to dealers in your area and listen for yourself. Perhaps many suggestions above won't be at a dealer near you. People who have done a lot of listening to streamers say it is very difficult to hear the difference between expensive and less expensive. Good luck. I love my streamer, BTW. So easy to use.

Lots of advice here.  I looked at streamers with built in DACs between $4-5k on Upscale website and they have several that have been mentioned and look attractive.  Check out Hifi Rose RS150B, Cambridge Audio Edge EQ, AURALiC Altair G2.1. You said you were not impressed by an Aurender device previously but there is an A10 on the site for below $5k as well.

kn