Well they seem to be more well known in the speaker realms. I also think highly of Lumin streamers also but their app on Android is a bit wonky. I have both the U1 for speakers and the EX/CX planned for the headphone set up and am pretty excited for their arrival.
How I got into servers/streamers was from this other user here by the name of Simorag, he is a very polite guy, and he indirectly directed me towards having a dedicated streamer/server versus coming out of a computer (as I have been doing for the past decade).
I think antipodes are not as well known on head-fi probably due to price and also that they are somewhat newer? Innuos seems to be more popular and also makes great products, they also have rippers built in.