Thanks to everybody that responded to my post. I really appreciate your input.
Yes Kartik, I do own the ESP 950's. They were my first high end headphone purchase about 12-13 years ago. Since then, I've acquired the 580's, 600's, 650's, RS-1's, and the K-1000's, among others, as well as various amps.
In spite of all of this, I'm really a newbie to the hobby because I hadn't really listened to any of them very much until now. I've really just started listening to them since discovering Head-Fi in May. Probably none of my equipment is even "burned in."
Even though I don't have the experience, the vocabulary, etc., I'll still try to give you my impressions of the the 950's. I'll try to do so in two different ways.
First: My source is the Sony DVP-NS999ES. The music that I've mostly been listening to lately, which is typical, is Warren Zevon, Dire Straits, Bruce Springsteen, Eric Clapton, Blue Merle, John Prine, Fred Eaglesmith, and Mary Gauthier. My favorite cans, the one's that I listen with the most, are the RS-1's, followed by the 950's, then the K-1000's, and lastly, the 650's.
Secondly: There was a mint pair of ESP-950's for sale recently on eBay. I very seriously considered buying them to have as a back-up set. When the price got to $425 I changed my mind. I felt that this was just too much to spend for a "back-up" set of cans. However, the fact that I ALMOST bought them, indicates my very positive feelings about them.
I hope this information is helpful. As I become a more experienced listener, perhaps I'll be able to more specifically talk about their characteristics. Again, I hope this helps.
I now need to ask another question however. Yesterday I sent Jan Meier a deposit for thr HE-90's. So, now I need to know which amp will best drive the HE-90's, as well as the 950's?
Again, thanks to everyone for taking your time to share your knowledge. Thank you!
GRod