How are the mids/upper mids on the L700 compared to a normal bias lambda? I like a bit of energy up there for my metal music. The normal bias lambda was acceptable but I wouldn't want anything more laid back than that. The Sigma Pro was too laid back for me for instance. I like my Beyerdynamic ET1000 a lot. They are like the Grado of electrostats. Very good for metal/rock/pop/synth and other modern types of music.