Are there any other headphones similar to the sr60is that take really well to modding? I'm done messing around with my sr60is, the sound I have is perfect (for some genres). The last thing I'll do is replace the inner plastic driver chamber with a wooden one, but I'm not in any rush to do that.
The Fostex T50RP. A very different sound that Grado though. So depends on what you're after. Very modable and the Thunderpants version is fantastic.