Not being able to 'work' the microphone for different timbres, and singing strengths has always kept me away from headsets (I tried in the 80's), and until I find anything as transparent as my EV N/D767a (new replacement for my N/D457 I used for ten years), I gotta pass on this one.
Plus, I still gotta put up a real mike for my T-bone....!
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An arranger is just a tool. What matters is what you build with it..!