If you haven't pulled the trigger yet you should consider getting a used pair of lower end SR Grado model like the 60i. This way you can test them out at school, on bus etc. If all is cool, you can resale or keep them as a backup.
I own a pair of SR60i and RS2i. I feel the SR60i's performs very well for the price. Also, check the for-sale forum, I purchased my RS2i's there for a nice discount.
If you're curious about the Grado sound, you should at a minimum pick up a pair of used Sr60/80 from the FS forum. I did and found the Grado sound was my cup of tea. If it's not for you, just resale them.
If you like the K701, you could always get the Q701 or K702, it has replaceable cables.
I recently received my repaired Zo2 and like other members here, find the results to be inadequate. I actually enjoyed my ZO2 v1 using HO and my 32 ohm Grados. It had a slight hiss, but the Smart Vector technology and amplification performed well when using headphone output. I opted for the fix because I believed it would improve every aspect of the original Zo2 and was looking forward to hearing the technology in a fully functional product.
The V2 does add...
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