Would someone who has heard both compare the PM-3 and DT 1770?  With Amazon's current 20% off deal the two are now only $80 apart.  I'm looking for headphones for the office and prefer a fairly neutral sound.

I've been lurking on this forum for years, but have just now been compelled to finally post something. I'm looking for closed cans for work that allow little to no noise leakage (I'm OK if I can hear people talking the the background when music isn't playing, etc.), are comfortable since I could...