I spent several years on my search for a top quality separate streamer to pair up with my DACs. As I went through this journey I ended up with a PSaudio Directstream DAC. This was my first DAC with I2S input. I tried various combinations of streamers with Matrix Audio X-SPDIF to get I2S to my DSD DAC.
I discovered Musica Pristina about a year ago and purchased the ACapella III I2S streamer. It was like opening a window to full transparency. This streamer is better than anything I have tried, even at twice the price! AndKevin the designer is a joy to deal with.
Give it a try.