UPDATE: My Grado SR60i is still under warranty (I just bought it on 16th August 2013), so I decided to send a email to GradoLabs for solution and guess what! They are sending me a replacement part for it!
Really happy with their service and it didn't take more than a day for them to reply! XD And I WILL NEVER EVER HESSITATE TO A NEW GRADO HEADPHONE! The RS1i or the RS2i either one I should really buy it I feel safer to purchase things from them xD
I like my RS-2i and I've never felt the urge to upgrade to RS-1i. It's more of a sentimental thing to me than money or inconvenience.
Grado has done like same week turnaround on my headphones before. Things break but they're always easily replaceable and even in the worst case scenario, the drivers are not even that expensive from them.