I have the T2 and it is really good. Using Roon also, I have never had any issues with the network. It is always ready to go and works great. I have tried it streaming in to the Marantz SA-10 and there is a slight improvement in some areas with that combo over the T2 only, though the T2 is really good at creating a 3-dimensional soundstage. I have been wondering how the U1 mini might compare against the T2 for streaming only, perhaps someone like @audiotroy can weigh in.