Get the hd800s. You are definitely feeling the difference between dynamic bass and planar bass. Also, you are experiencing going from a slight v shaped headphone to a neutral headphone. You won't get gobs of bass, you won't get exciting treble. What you get is honest detail. If this bothers you consider eqing the abyss to your taste. For me personally, after getting a flagship planar (lcd 4z) I settled with the hd800 for comfort and for the dynamic punch that you don't quite get with planars.