One thing the 103 family isn't is bright; suspend judgment until 40-50 hours or so have passed and the cart settles in - personally, I've always found anything in excess of 2.55g (or so) to be detrimental as it stomps on the cart's suspension leading to a restriction of dynamics and hardening of the sound. If you still find it bright, I suggest playing around with your MC loading.
-Richard
-Richard