I'd recommend LFF's headphones as well. Not a fan of MrSpeakers' headphones though.

If you don't dislike in ears, go with that. More portable, just as isolating, and pretty much no leakage. I've switched to them for work (I have to do much of my research in libraries).

And before the usual suspects come in with terrible ears to talk about the vibration headphones and AD, let me give you some context:

It took me 2 weeks to decide I didn't like the AD. Ultimately there were too many little problems for me to like it. I had to take the ZMF off after 5 minutes because it sounded like trash. I'd take the FSP over the ZMF. Hell, I'd take a good t51p.

To each his own, but I could have used less bass emphasis in the upper-bass to low-mids on the Slant, more in the response below 100Hz. Just my tastes, though, they're definitely good and enjoyable. Absolutely recommended if you want that. I'm probably more of a regular Paradox guy. Surprised you found the ZxV worse than the AD, zerodeefex. Know when your coworker got their ZxV? I know some of the earlier tunings weren't great, also not sure on his V1/V2 T50RPs. All I know is the pair I tested sounded better than the AD to me in many ways. *shrug* (Not doubting your ears or what you heard, just gathering info to make sure any recommendations I give out have as much info and research put into them as possible.)