Headphones - Senn HD 800 or Grado RS1i.......

The Sennheisers have possibly the best soundstage of any headphone I have ever heard. As far as a cable, there are a few main brands to check out -- ALO Audio, Apuresound, Stefanaudioart, and (my personal favorite - especially with their complement cable) doublehelix. As far as warmth you'd want a copper cable instead of silver. The whole subject of headphone recables is a sore subject to many, with half the people proving theres no difference through blind tests, the other side proving the opposite with the same methodology. The truth is, if theres warmth issues even with your cary, I don't think these are the cans for you. The Audeze LCD-2 are currently as close to a consensus as the head-fi world can get at best all arounders in production, and are specifically noted for having more warmth and slightly rolled off treble compared to the hd800. At $950, they're also cheaper.

My recent search for headphones ended with a short list of two - the Senn HD800 and the Beyerdynamic T1. Both are outstanding headphones in their own right, but to me the difference between them came down to their musicality.

I found the HD800 to be more analytical - I found myself listening to recordings and being impressed with how good a recording sounded. With the T1's I found myself getting drawn into the musiccal experience and lost in the music. I have not regretted buying the T1.

If you are looking at high-end Senns or Grado, you owe it to yourself to compare them to the Beyerdynamic T1 as well.

I agree regarding the T1s. I went to 32 Ohm Audio in Portland and listened to all the flagship models from Sennheiser (800s sounded to forward/bright/analytical); Grados (hard to ignore but too much going on with the sound/imaging), Denons (great bass), etc. The ones that were most musical to my ears, with speed and fluidity, were the Beyer T1s. Matching Beyerdynamic A1 headphone amp pairs nicely too.

Same here, had Sennheiser 800 which sound more impressive at first listen than Beyerdynamic T1, but ultimately I didn't find them musical enough and now I'm quite pleased with T1. Can't wait to get the cord upgraded :-)

I'd like to also mention that even though I seemed to like what Grado PS1000 had to offer, the fact that I do a lot of listening while laying down on my bed didn't help, because these otherwise very good headphones, will NOT stay on your head the way they should and they will fall. Nobody mentioned this fact anywhere and in case I'm not the only one listening to cans while being in a horizontal position, I just wanted to be the potential buyers aware of this fact.