I'm not familiar with those headphones. Any "consumer" Sony stuff I've bought seems to be way overpriced for what you get, but hey, that's just my opinion. "Pro" stuff is okay, but in the little experience I've had recording, there's not much "pro" Sony stuff that's used; they're more in the video end of things with pros, as far as I know.
Anyway, we have Sony CD480 headphones here. They are easier to drive than our Fostex headphones (go louder with same amount on "volume knob"), but leak a whole lot more; plus I find my ears get tired listening at loud volumes on the Sonys a lot faster. Both my Sennheisers and Audio-Technicas (especially the A-T's) are VERY easy to listen to, even at louder volumes, for whatever time I've wanted to crank up the headphones.
One other thing to keep in mind is that if you are going to be using them with a battery-powered something-or-other (Discman, iPod, etc.), check the Ohm rating. Lower Ohm (resistance) ratings, which are usually listed on the container, mean they will "generally" be louder than headphones with the same Ohm rating at the same "volume knob" level. Some even have sensitivity ratings, which is "supposed" to give an idea on how much efficiency the headphones have. Assuming the ratings are accurate, higher-"sensitivity" headphones (probably with lower Ohm ratings) should be more efficient. The point of this paragraph is to say that these more "efficient" headphones will help your batteries last longer, as they will need less energy to go loud. This is not to say they will SOUND better, they just may work better in your scenario.
As others have mentioned, there are compromises to make here. Headphones have difficulty with true bass extension, so some have ports or bass-boost circuits that (in my experience) just sound crappy and boomy. The main thing I like about my A-T's is their bass response: solid, too loose to mix with, but at least they don't sound like what I've heard with Sony's old Turbo Boost circuit or stuff like that. Closed-back headphones tend to have this problem. Open-backed headphones "sound" better, but have even more problems with bass extension (my Grado's are like that).