I have the PSB M4U 2's...I tried a bunch of different headphones, including a few of those that you mentioned above. These were the best in this price range, especially considering they have their own amplifier. Yes, they have noise cancellation, too, but you do not have to activate it (I never do). They are closed back, fit my big ears, and sound very, very good.
Headphones like the HD600 are open-back headphones, meaning they won't be isolating the noise at all, and people around you will easily hear what you're listening, too. The benefit is a bigger soundstage, but we're still not talking what you'll get with even the basic of speakers. The sound will live in your head...no way around it.
I'm not 100% if they would work, but Astro makes a wireless gaming headset called the A50. It has built in digital surround processing, and it does work well when I used to watch movies on my XBox 360. I'm not sure if you can simply hook these up to your oppo or not (they just have an optical input to the mix-amp, so I don't see why it wouldn't work). These will do the job for movies, but they're nothing impressive for music, in my opinion.
For just overall sound quality, a nice pair of IEM's with rubber cups that seal off your ear canal would be pretty good, too. Etymotic, sennheiser...even sony...make some good stuff. I had a pair of $100 sennheiser earbuds that sealed off my ears beautifully...they had some of the best sound of any headphone.
Personally, if it's for movies mostly, I'd give the A50's a try...but then I already own them, lol. The M4U 2's also get my vote, but the issue is still getting a cable long enough to go from your receiver to your headphones.