Beyer DT 880 Premium Special Edition 250 ohm
Excellent product. I already had used these in the studio many times so I already expected them to be perfect. If you listen to the phones as flat EQ you'll really enjoy classical, acoustic guitar, violin, etc.
Personally I enjoy adult metal rock, electric or acoustic blues, or old and new country music most of the time. I found that it is necessary to use a small preamp mixer (Behringer $100) to boost the low frequency control for my pleasure experience - not a lot - just a little.
If you want to try DT880 phones for rap music and shake your inner ear canals (that's not a criticism, it's actually true) - forget it. Try the enclosed DT770 phones instead. Or try the impressive cupped Dr. Beats if you want awesome bass.
I also do some digital mixing and editing recorded speaking for audio books, so the DT880 phones are perfect for me.
About the 250K impedance: they're just fine for most people - especially if you use a preamp/mixer like I said before. So don't grab a pair of DT880 cans and run to Best Buy then plug them into a lot of different receivers, CDs, or DVDs because the line impedances are different between various manufacturers.
The products are from Germany. What else can I say? I read somewhere that some models are made in America or Canada. I can't verify if that's true or not. Even if they are, I suspect the diaphragm cones are the same German parts anyway.
I like the straight cord. I don't like a coil cord so I'm happy about the Special Edition.
My one only complaint that I wish the cable could be removed from the phones so it could be replaced easily. I'm careful with mine so it's not a problem for me but I can envision kids or Neanderthals pulling and stepping on shoes.
In conclusion: go for it! The same phones are $200+ at some sellers so be careful. I got mine from an authorized dealership.