I'm currently contemplating between the Space NC and Sony 1000XM2. I mainly use bluetooth IEMs (especially outdoors and in sport activities) but when I'm at home and am either writing on my desktop or watching Youtube clips, I would prefer a wireless pair of over-ears that cancel noise. I just need something with a decent SQ and noise-cancellation.
It has been my experience with bluetooth IEMs that more expensive doesn't always translate to significantly better. For example, I have a 150-dollar pair of V-Moda BT IEMs and I also have a pair of 25-dollar Anker SoundBuds Curve BT IEMs. V-Moda is better in the bluetooth stability (can be a big issue with cheap BT earphones) and SQ deparments but not much. The comfort level is the same on both. I would never buy the V-Modas again as they are not bang-for-the-buck compared to the Ankers. I wonder if the situation is the same with the Space NCs and the XM2s.