I have seen some HD 598's on sale at $120. Should I buy them quickly?
I have looked at some reviews and seen that everybody loves them, but
I'm still not sure yet.
Yes, an excellent pair of headphones. Great all rounders. They're not for outdoors. Best used with an amplifier but an PC would suffice just fine. They are a bit weak on the bass but you can tweak your equalizer. Not great with phones though.
Excellent crisp and clear sound. If you're used to heavy bass you might find them strange at first, but see them through for a week or so and then go back to you're old pair and you'll see the difference. They are best with acoustic music but are epic with other types too. A bit big, but they are lighter than they look and they are comfortable. Definitely buy them. They are better than the urbanites by miles (as far as I remember you bought a pair). Worth every penny.
I'm actually wearing my 598s as I'm typing this. The worst part of these headphones (and all others) is that you have to break them in for the first week so you can get the best possible sound quality.