I also recently upgraded from a Bluesound Node, which I’d been using happily for about 2 years. Agreed that it is a stunning value for what it does.
I dipped my toe in the water with a used Aurender N100H going into my Chord TT2 and M Scaler. Living with that for about a month I decided to jump in with both feet. I originally thought I’d go for a used Aurender N20, retaining the Chord stack. I’d read about the Grimm MU1, but wasn’t seriously considering it until my dealer said that the Grimm has so upended that aspect of the digital market as to render the competition moot. That may be a bit of an exaggeration, but I wound up getting the MU2 and after successfully selling my Chord TT2 and M Scaler, I feel I’ve truly achieved an end game digital front end in a single box. If you’re looking for a one and done step, I highly recommend the MU2.