I love mine, but I stopped using them as much when I got my HD-580.
The HD-580 isn't really better, just different.
I would say right now I mostly use my Q701 and DJ100 the most, but the HD-598 will never be sold.
I think the HD-598 does almost everything right and a good all rounder.
It's what I would suggest for someone that plays a lot of games and watches movies with headphones.
Good for those that don't want to be bothered by garbage tracks too much since they're fairly forgiving (but not too much).
I actually think they're more comfortable than the HD-580 and Q701 too. I just wish they came in black!
I liked mine so much that I recabled mine with Mogami. The only negative is that now it's dual entry. Sounds similar to stock but with a few small improvements.