Funny how threads can go south.
I own a pair of M3TS and a pair of Tekton Electrons in a 2nd system. The Tektons are no slouches, but given that the Electrons use two 4" speakers for mid-bass, I find them to be a bit lean in that area. The bass is tight and overall they are very good sounding speakers. The polygon high frequency array is fast and clean, and is a very interesting design.
Overall though, I prefer the M3TS, given their bass and midrange fullness and great imaging.
For me, the two are more like digital (Tekton) vs vinyl (Spatial) and I prefer vinyl.
It will be interesting to hear someone's review of the Tekton OB, and at $7K that is out of my league (I paid $1200 for the Electrons, used)
Happy listening!