Maril555, my MP-1 is a modded MkII that replaced a BAT VK5i and VKP10. The main thing about Atma is the sense of wide open bandwidth and agility, as compared to the mellower & prettier sound of BAT. However at CES BAT REX components were fast on their feet, effortless, yet a bit fuller in embodiment than I hear at home. Of several exhibits this was the only one that had convincing synergy with Shashas. In other contexts at THE Show I heard MP-1 Mk III sound remarkable with Classic Audio Reproduction field coils and VPMS. It's a close horse race.