Well, I pulled the trigger and bought a pair of the std GC's for my speakers (Daedalus Audio DA-RMa's); I was pretty skeptical, but after reading Ozzy's experiences (and strongly considering that he appeared pretty skeptical at first as well), I finally placed an order.
They arrived today, put them in the system, and its now been playing a couple of hours. The biggest difference of all is much wider, deeper soundstage, along with the other positives already mentioned!
Hmmm, maybe at least another pair on the amp end, and then maybe a pair in the unused outputs of my integrated????