Chakster, thanks for the documentary on Grado Labs; their philosophy of quality, and consistently delivering a product their customers appreciate is one of the reasons I buy their cartridges.
Grado is called "the poor man's Koetsu" for a reason; it's as close as a poor man can get to a Koetsu. I heard a middle of the line Koetsu, and when my budget allows, I'll get one; however, in the meantime, I'm quite satisfied with the Grado Master 2.
Although I moved up from the Platinum, to the Sonata, and now I have the Master, I don't recommend Grado on this forum because it's not a Rock cartridge, and that's what most here seem to prefer.
In the beginning, I relied on this forum, and I was never satisfied; that's why I say each person has to make his own discovery in regard to the best cartridge for him.
Enjoy the music.