for me burn in made a HUGE difference.  In fact I have had it for over 6 months and it is still getting better.  I do agree however regarding the heavy cable  that I think some people get a bit too into the 'well thicker means lower resistance and more durable' type argument.  I mean you pay more for the good stuff so you expect more.  But really I think for the most part cable differences aren't worth the cost/weight/benefit trade off.  Sure a cable should be decent but I personally prefer light and flexible and replace it if it ever falls apart.  Personally I have never had any headphone cables that needed replaced even on walmart $9.99 special series buds. I would be very happy with their T5p cable and connector on the T1's but with a slightly longer cable.

... if you discount the cable they aren't actually very heavy headphones at all.  relatively light in fact.

... oh and one more thing  I would like if they had a small internal set screw for adjusting the headband position and locking it from moving about.  The little dimple setup they have is a bit weak and unsure.  I have no issue with the sound signature by the way, just the cable and adjusters.