I’m sure all the streamer mentioned are excellent. The U2 mini has the best selection of output types no doubt but I think I’ll be fine with either USB or SPDIF output on the Aurender
I don’t see buying anything like an Esoteric or dcs where there are i2s and multiple ins and outs including clocks. All I care about is some flexibility and whether the streamer or the DAC controls the clock depending on which DAC I use.