Comfort for me is slightly different. Part of the earpads rest on my ears, I can't get them over it 100% so it seems. I also have a short height from ears to the top of my head, and it's not a perfect fit that way either.
But still comfy enough to wear for several hours of listening during the day.
As for isolation, especially when playing: several folks have said it takes "more" to get my attention when they stop by my cube. However, there is concrete flooring outside my cube, and I still heard hard heels on it as people walk by. Certainly muted, but still audible even with music playing at reasonable volume.
But I agree with much if not all Ryan says about sound, it's really quite good, especially some decent soundstage for a closed phone.