Wow, I thought I clicked on the wrong thread
Anyway, I'm thinking of buying another set. I've narrowed it down to the Sennheiser HD600, Beyer DT880 or Sennheiser HD595
I'm leaning away from the HD600 just because it's a warmer, darker sounding headphone (first impressions), almost too much so. The 650 is too much for $ for me although it sounds great. The 880 and 595 would be a less of a shock coming from the Grado's but still be complemetary. They should also be more comfortable to wear for longer periods of time. I dig my Grado's for rock and pop but sometimes they are just too unforgiving in the high frequencies depending on the source material.