Good Headphones...What should I Get?...

There are so many on the market, it will depend on how much moneyyouo have to spend, what headphone amplifier you will use, and what style you like (around the ear, in the ear, on the ear). I recommend that you check out the following websites for more information:

http://www.headfi.com/
http://www.headwize.com/
http://www.headphone.com/
http://www.goodcans.com/

Some are commercial and sell products, including their own, and others are forums.

I own the Sennheiser 600, an Antique Sound Lab amp, and nice cables. I like around the ear phones for longer listening. The Senns are detailed without being fatiguing. The ASL amp is tube and to my ears is very melodic. Once you have done some investigating, come back. I'm sure the folks here will be quite helpful. Happy hunting!

Hmmm .. you remove room resonances for sure, but you also destroy the spatial information ... the music all ends up in your head.

I use headphones when I must be quiet, but otherwise I always listen with speakers.

For the $500+ that you'd spend on good cans and an amp I'd take this money and improve my main rig if I were in your position.

Of course, the headphones would not replace my main rig. The idea is to use them as a reference in regards to the source material played. Short of a dedicated listening room, I think acoustically I've done all I could to my listening area - I've learned to live with and enjoy the imperfections of my environment.

There are ways to compensate for the lack of spatial orientation when you use headphones. There are times when they are useful. They will not replace the effect of listening in a room with speakers. If you don't plan on using them alot, you may not want to budget much. A $150 set of headphones with a built in amp from your receiver may be all you want. That will buy alot of headphones these days. If you want a dedicated rig that will be used frequently, budget a minimum of $400-$500 ($200+ for the amp and $200+ for the headphones). I have heard $99 headphones that sound really good, especially if you are not going to listen to them for an extended time. Good luck!

GRADO. Don't forget the headphone amp. Spend as much as you're willing because IME they get better as you spend more. I super dig my SR225s.