I joined WATMM for Quaristice. It's still overall my fave. There's something really special about the mood and pacing of it that makes it feel like a dream or a movie more than any other Autechre. It's got the master's touch.
io was made with whole-tone scales which are often associated with the feeling of being in a dream
There is a bit of that for sure... lots more to it than that though.