Closed headphones in $100-$200 range

[Annirak]

I'm relatively new to the hi-fi world, but the last set of ($35 Altec Lansing) headphones I bought has lasted five years, so I decided that it was time to spend a bit more on my audio and I'm looking for suggestions on headphones
 
I'm looking for closed headphones in the $100-$200 range.  I'm likely to use these while commuting on the train, so isolation is important, but my price range is below most of the good active noise cancelling options.  I've owned a pair of Shure E3C's, but I found that the in-ear option tired my ears quickly.  I've also owned a pair of Koss's "The Plug," some of the earliest main-stream canal-phones.  With them, I found that I only got good sound coupling once out of every four or five insertions.  All that being said, I think that circumaural closed-back headphones are what I'm looking for.
 
I use music to help me focus and block out ambient distractions while I work, so I need headphones which are comfortable for long periods of time.  This also means that my audio source is a computer.  I'm not beyond buying (or building) an external DAC for the computer (I already have a little known external DAC made by Creative Labs a few years ago.  They don't even admit they made it now), if that's what's required to do my new headphones justice.
 
I would  like foldable headphones, but that's not necessary.
 
The contenders that I have found so far are:

1. Senheisser HD448
2. Ultrasone HFI-450
3. Technics RP-DH1200

From the reviews that I've read, the RP-DH1200 doesn't have great audio quality, though I like the replaceable cord.
 
I'm looking for any suggestions on what else I should look at and whether the headphones I've highlighted are actually the best options in my price range.
 
Thanks,
Annirak

 

[1Time]

FWIR, I suggest considering the HD25-1 II. 

 

[Annirak]

Thanks 1Time,
Do you know if those are circumaural headphones?  They look like on-ear cans to me.  I find that cans which just land on my ears press them down painfully over time.

 

[MuuMuu]

Audio Technica ATH-M50. About 110 on Amazon, comfortable and circumaural closed.  Very good for the price range depending on what you're listening to.
 
Read people's impressions on the headphones you're considering, don't kill yourself over the decision, and if you can't test them locally buy from a place that'll let you return w/o a restocking fee.  Heck, buy two of your top contenders after you think about it and return the one you don't like as much.

 

[Proglover]

Beyerdynamic DT770, to throw in another one
 
good hunting!
 
edit: I'm sorry, not completely shure they are within that price range, only know they do in Europe

 

[Annirak]

After reading some more reviews, I've come up with another option; Shure SRH750DJ's, which seem to get good reviews in this forum.  How do these stack up to 
 

1. Senheisser HD448
2. Ultrasone HFI-450
3. Beyerdynamic DT770
4. ATH-M50
5. HD25-1 II

 
 
I've read a few reviews comparing them favorably to the ATH-M50's.

 

[1Time]

I haven't owned these. The HD25-1 II wears on the ears. The M50, HD25-1 II, and SRH750DJ get more positive comments on Head-Fi than the others. I would be more inclined to buying the Shure.  
 
Quote:

After reading some more reviews, I've come up with another option; Shure SRH750DJ's, which seem to get good reviews in this forum.  How do these stack up to 
 

1. Senheisser HD448
2. Ultrasone HFI-450
3. Beyerdynamic DT770
4. ATH-M50
5. HD25-1 II

 

 

[Annirak]

Well, thanks to all.  The SRH750DJ's are what I'm going for.  I expect I'll get a chance to get them in about two weeks.  Will update with impressions then.

 

[Annirak]

I'm 30 minutes into my SRH750DJ's, and I'm loving them.  Their sound is much more defined than any phones I've tried before and the bass is much punchier, while still staying clear.  My only complaint is that they squeeze quite a bit and, with the size of the ear cups, they make my jaw a bit sore!
 
Hopefully they'll break in since I have no desire to take these back!
 
Thanks to all for the suggestions!

 

[1Time]

You can safely loosen their grip by putting your thumbs together at the top / center of the headband and repeatedly bending the plastic piece that's in there. I haven't found any other location on the headphones that is safe to bend.  
 
Quote:

I'm 30 minutes into my SRH750DJ's, and I'm loving them.  Their sound is much more defined than any phones I've tried before and the bass is much punchier, while still staying clear.  My only complaint is that they squeeze quite a bit and, with the size of the ear cups, they make my jaw a bit sore!
 
Hopefully they'll break in since I have no desire to take these back!
 
Thanks to all for the suggestions!