When upgrading I tend to go with whatever the weakest link is at the time, and in your case I think the streamer is your weakest link by a good margin. I’d encourage you to look at Aurender, Grimm, and Innuos as well. Best of luck.
Upgrade speakers or DAC
Next upgrade is going to be either Front L/R speakers or streamer. Current speakers are Sonus Faber Olympica III, looking to upgrade to Il Cremonese. Streamer is Cambridge Audio Edge NQ looking to upgrade to dCS Rossini APEX.
Which upgrade will make the most significant improvement?