Here's my public answer to a private query:
I did have a chance to hear the 47 Labs Koma some years back. If one of my modded Luxman PD444s bit the dust, I'd try to get a Koma. It's a sublime turntable, absent the "laziness" of most belt drives, it has drive more like a Direct Drive or Idler, but the quietude and ease of the best direct drives and the musical elasticity of belts. And the counter-rotating "underplatter" sounds quite effective to me. The table also sounds mechanically grounded, for a big, robust, toneful sound. The companion Tsurube tonearm is a champion tracker that has the fleetness of a low mass tonearm, along with the tone-monster attributes of high mass arms mated to low-compliance MCs, like the Ortofon SPUs. In my experience, mechanically-grounded turntables with great resonance control are preferable to air-bearing tables (and air bearing linear arms), plus despite the Koma's pulley-routed belt for two counter-rotating platters, it is fundamentally a simple mechanical system.
Phil