Right now, I have my Lumin D2 connected to my McIntosh C52 preamp. Using pure silver coaxial digital cable. Just to bypass the DAC from Lumin. The wolfson chipset from the Lumin is not bad at all. Just I prefer the ESS chipset, for some reason I feel their sound is more crisp. Some people don’t like it, I guess we all have different taste. The pure silver coaxial digital cable is very sharp and details. https://www.moon-audio.com/silver-dragon-digital-cable-v1.html
I also have my XLR cables connected to it from my C52 to the Lumin D2, so I can do sound comparison between DACs.
The only thing lack from RS250 is no balance output. I wish they had that.
Just like you said the big screen is a big plus. I total agree with that.
Lumin is just a streamer, that’s all. Nothing special. I was going get the Lumin T2 but the features from RS250 just quite attractive for the price.