This thread is rapidly turning into a K000 appreciation thread.
And with good reason,they are the best.
But if not adjusted right can be a real pain.
The best sounding, is that what you mean?... just to clarify, as one of my headphone purchases was for isolation #1, and sound #2... And 'best' in terms of isolation, belongs to the Etymotic product line!
The Triple Fi 10. To me, they're pretty much perfect. Last year I got tired of putting foam in my ears, so I switched to headphones for awhile.
I keep going back to the Triple Fi's and they still sound good.
I like them so much that if they made a new version of them that were smaller, i'd gladly buy them again. It seems like they should be able to make them half the size in a few years. It'd be nice.
That's my biggest negative, they're a bit too big. I'm surprised they can even stay in my ear. I use the comply foam and it's not been a problem.