I use Bricasti M3 with network player/renderer as Roon end point. I had Lumin U1 Mini and preferred the M3, sold the Lumin. Bricasti has few more models up from the M3 with better DAC (M1S2, M21). The preamp section in the Bricasti DACs is not to be overlooked as well. It’s transparent with excellent volume control, in case you want to run the DAC direct into your amp. I prefer a dedicated preamp as to me the preamp just layers things better.
Other examples of one box DAC with network player are Weiss and Mola Mola Tambaqui. The all sound different and what you like will depend on your sonic preferences. Overall it’s a clean and great sounding setup with any of these options. You’d have to spend a considerable amount to beat the built in network renderers in these units. Just my opinion.