To get best sound quality, roon or lumion app?

To get best sound quality which way is the best to go, us the Lumin app in my Lumin T2 or use Roon to make dsd512 -> T2?
I use a Lumin U1 mini and have compared Roon and the Lumin App. I find the sound quality in Roon to be much better. I do find Roon to be frustrating to use, particularly for classical music. But the sound quality and Tidal integration make it worthwhile.
spinaker01 -> are you using upsampling to dsd or anything?
rossb -> do you use upsampling to dsd?
I have the Lumin U1 and detect no difference in the sound between the Lumin and a Roon apps.  You can tweak Roon to change equalization and DSP settings, but I leave Roon settings alone.