Is it worth spending $90 for headphones?

[psteve]

For 30% less money your can get one of these;
Koss PRO4AA Headphones - Yahoo! Shopping

Don't do it.
Koss headphones are one of the worst brands on the market.
Look at Sony Professional series, Sennheiser, Akg, or even Bose would be much better than Koss.