When I close my eye music a whole right out side of my head (entend right out side of my ears) but voice is forward and is still in side my head. Clarity (5%) and instrument separation (15%) is less than Meridian G08 + WA22 + LCD-2 + ALO custom cable. Not bad for IEM without amp and stright out of my MacBook Pro. Bass is about right.
Have you also had a chance to listen to W40s? Can you compare their bass response. I've just heard from another um pro 50 user about how fatiguing the bass got over time. I was inclining for these but now this scared me.