Today, I pull the trigger and bought the MicroRendu with LPSU (small green). I believe that combination will sound better than the BlueSound Node 2i.
I only stream music from my own Network and occasionally use Airplay and Spotify, so I don't need all the extra functionalities of the BlueSound Node 2i.
Also, MicroRendu gives customers an upgrade path. In the future, if I want to upgrade the MicroRendu to the Ultra, the manufacture can buy back the old device and sell me a new one. I think it will be a sweet deal.