I love my 250 ohm dt250. They are probably the most musical sounding headphone I have heard to date regardless of price. When I say musical, it means a good combination of liveliness, punch, accuracy and dynamics but they have their weaknessess and for less than 200 US dollars i am willing to accept them since I think they sound better out of a basic O2 amp than the he6 out of a speaker amp via speaker terminals.

You probably expect me to say this already, but the HE6 is a bit picky with amplification and thats probably why it sounded too bright. 

I hope to hear your DT250 sometime though! Too bad about the driver problems.

Talking about inconsistencies, I'm not sure if its just due to the newer unwashed pads but after listening to a few albums on my second pair (ser# 70050) (Third counting the 80ohm version), I can say that these are better to me than my older pair (ser#63487). The highs on these newer ones just seem to have more presence and air beyond 10khz and the slight glare in the upper mids (around 2khz) that I found when using them with windows is not there anymore. I used to only get this sound when listening to music on them via Linux Ubuntu. One recording where I notice this upper midrange brightness is on Megadeth's "Countdown to Extinction". I used to always prefer the softer and warmer sounding 2004 remaster with the older 250 ohm version I had because the 1991 pressing had a nasal midrange glare that made me automatically choose the 2004 remaster. When using the newer cans, the 1991 pressing is still bright and trebley 10khz and up but the midrange nasality that annoyed me is gone, wow I am luvin it! I know this just shows more negativity about the beyer inconsistencies but damn the dt250-250s are cans I always enjoy regardless of the slight differences between the two 250 ohm models I've owned. In the overall grand scheme of things, they should all be perfect and have all the goodies that these cans can provide but since it is not a perfect world, I am happy with this newer airier one that I have without the extra midrange glare which I already thought was a very small tradeoff being maybe only 2 to 3db different than these in my estimation.

Just to add a little bit of further knowledge to this thread - I've had a DT250-250 that eventually developed a bass inconsistency between channels and I sent this pair to Beyer to be tested. They measured them and discovered that the flimsy cable (uh, my term, not theirs ) in the headband was to blame for the uneven response. They replaced the entire headband and the cable and the pair once again sounded balanced. This experience indicates to me that the cable might be responsible for a lot of the pair variance issues we see with these headphones.

With all this said, as much as I liked the DT250-250, I decided that the uncertainty whether they are functioning properly is just too much of a hassle and I've moved on to other cans.

Beyers service is top notch though and if the replacement pair sounds balanced then it is a good one. I am loving mine. Going to other headphones is not an option unless one is willing to spend more because theres nothing better at this price range IMO.

I agree, the DT250-250 is probably the best headphone for the price provided you get a good pair. Their sole sore point for me (besides the technical issues) is the comfort (pads aren't completely circumaural for me) and the fact that they don't fold. Obviously, the latter two issues are very subjective and dependant on the user's needs and head/ear size.

With this said, I have to say I loved the Audio Technica ATH-M50 that I moved onto after the DT250. I also tried some KRK 8400's but really hated them - they were piercing and the bass was weird, sounded like someone farting I've been looking for an all-rounder closed-back circumaural monitor for years to use for work (I'm a film maker and video editor) and for pleasure and have tried pretty much every notable can below the 600$ range, with the exception of German Maestro/Charter Oak. Hated all Ultrasones due to their harshness, thought the MDR-7506 had a very annoying tonality for music listening (decent for voice tracking though, no wonder they're used so commonly in broadcasting). Sennheiser HD280 was uncomfortable and its bass was not neutral, lower-end Shures and Koss ProDJ100 were OK but not refined enough for my needs, higher end Shures also sounded fine but were too uncomfortable to honestly consider them as a work headphone. DT48 was really not for me, haven't heard the supposedly more neutral DT48A though. DT770 had waaay too much bass to be neutral. Closed-back AKG monitors on the other hand had too much of a bass roll-off to be used for work - it is good to have a headphone with decent sub-bass extension when trying to denoise and clean field recordings. M-Audio Q40 also had a lot of bass but wasn't so bad, sadly it was not very refined in the mids and treble, once again making them not ideal as a monitor. Fostex T50RP was quite nice stock but holy shit are they butt-ugly... I know looks are secondary to sound quality but I had to draw a line somewhere Denon, Allen & Heath and Pioneer DJ cans were just that - DJ cans - not tuned or suitable for production work in video or music that is not electronica. Sennheiser HD25-1 II (or something) was quite nice but not comfortable for me for longer sessions due to their supraaural design - a monitor IMO really needs to be circumaural. The same can be said about the Beyerdynamic DT1350. Hmm, I'm not sure if I forgot to mention anything but I certainly have gone to some lengths to track down the elusive all-rounder monitor out there...

So far, the best closed-back circumaural monitors that I have tried were definitely the DT250-250 but also the Audio Technica ATH-M50, which is receiving a lot of hate these days and I really don't understand why. The M50's V-shaped curve is actually a blessing both for work and for pleasure - at lower listening levels, they sound neutral (due to Munson-Fletcher curve) and for fun, I could listen to them louder and enjoy the emphasized bass and treble for a fun, punchy sound.

Finally, I have settled on the AKG K550 as it has a neutral sound, some mid emphasis (useful, once again, for voice tracking and other video work), do not have very rolled-off bass and are more refined than the DT250 or the ATH-M50. I did not really experience the glare that people are complaining about although they can sometimes get fatiguing. I am pretty happy so far but naturally, if something better comes along, I'll be more than happy to check it out

I hear that the sound changed a little since they first came out so that is a factor I don't know about.

Indeed, the white box version that is on sale now is more neutral than the classic M50.