I haven't heard Innuos but I love my Aurender n150, paid retail $3500 and it was worth every penny.
I have a big library of CDs all ripped in .WAV and it has a built in slot for a SSD hard drive which has my library on it. It sounds dead quiet, sound quality is amazing connected to my Schiitt Yggdrasil DAC.
I have Qobuz which sounds very good and the hires stuff is really nice, but full CD quality on the built in n hard drive blows away streaming.
The app is a little clunky but not bad and I wish it came with a standard IR remote for pause, play, skip tracks without having to look at a phone or tablet, but besides that it is a fantastic streamer that is built like a tank with all kinds of isolation and a battery backup built in so it runs off pure power internally, it also has a buffer so it downloads the songs as it goes etc and doesn't get bottlenecked as it streams.
I think Aurender just came out with a new model that is basically a N150 with a built in DAC for the same price at $3500 and I think it does come with a IR remote.
If you want Hi-res streaming and having your library in one box instead of your music being on a NAS or computer I highly recommend Aurender.