First of all, let it be known that I am indeed looking for headphones to replace my requisite first pair of Grado SR60i, which I have owned for a little over half a year. But in my defense, let it also be known that it is my hope that the ensuing discussion might engender wider appeal than...

I'm afraid I can't answer your remaining questions for you, but I will contribute what little I can to your quest.   I do a lot of reading here, mostly shopping for things I can't afford, and it's absolutely uncanny how every time someone makes a post considering the purchase of sub-100...