What I have right this minute:
1. AKG K701
1a. Sennheiser HD580
2. Beyerdynamic DT770 Pro 80ohm
2b. Etymotic ER-4P
3. Sennheiser HD25 Concorde Edition
4. Sennheiser HD25-1 II
5. Sennheiser HD525
6 AKG K301 (old red one)
7. AKG K240DF
8. Sennheiser HD490 "Classic"
9. Grado SR-125
10. Old AKG K141 (Silver, strange ribbed cord, but solid headband)
11. Sennheiser HD440 II
12. Realistic Nova 30 Pro
...
7000. Half dozen or so crappy pairs of earbuds. Several crappy Coby headsets that I bought solely for the foam pads.
I realize things like the K240DF and the SR125 are great headphones, but they just aren't that enjoyable to me. Especially the grados -- just too piercing even with EQ, plus the thick cord is unwieldy. The K240DFs are nice, but I have too many pairs that are just more fun to listen to.
I'd say everything past #3 are going away real (ebay most likely) soon. I may keep the 490s for work headphones, though, since they're light, open enough to hear the phone/other people, and cheap enough to leave on my desk.
Once my replacement 580 headband comes in, I'll be able to really test the HD580s against the K701, and the lose there might just get sold. I got such a great deal on both pairs that it will be hard to part with one, though.
And I haven't really used my etys much in several months, so I may ditch them as well, unless I find the HD25s have too little isolation for MAX. Speaking of the HD25s, I only list the Concorde edition ahead because of the convenience factor - they fit me just fine, and I don't have to fiddle with the 2 adjustable headbands, and adjustable left earcup. The one drawback is the EXTREMELY microphonic cable -- I think it may have hardened for some reason.