Firstly, I suggest going to headwize.com and you will find an entire website dedicated to headphones. Use their search engine (if it is working) to save time.
If you re-read most of the recommendations for Sennheisers you will find that most who like them use a dedicated headphone amp, frequently with tubes. The only way I have liked the Sennheiser 580 or 600 is with an Earmax. This combination sounded terrific, but is much more than $300.
I prefer Grado's but I do not wish to bother with a dedicated headphone amp. I have Grado SR-80's and RS-2's and like them both. I just picked up a pair of Denon AHD 750's to try for summer listening (when the air conditioner is on) and they seem to sound good for a sealed can.
If you re-read most of the recommendations for Sennheisers you will find that most who like them use a dedicated headphone amp, frequently with tubes. The only way I have liked the Sennheiser 580 or 600 is with an Earmax. This combination sounded terrific, but is much more than $300.
I prefer Grado's but I do not wish to bother with a dedicated headphone amp. I have Grado SR-80's and RS-2's and like them both. I just picked up a pair of Denon AHD 750's to try for summer listening (when the air conditioner is on) and they seem to sound good for a sealed can.