[donuthead]

I found grandfathers old HD540s when his house was put up for sale and claimed them.  I was planning to get a pair of headphones for home use and was leaning towards a pair of HD650s or 600s, but then I got these.  I'm looking for something to complement the HD540s and I keep coming back to the D2000s.  I want something closed with nice low end which the HD540s arent/don't have.
 
Is there anything else I should consider?