Marco, I see you like synergistic intcs. I tried many diff intc's in my system. Never heard much diff til I tried Looking glass pII's. Images just bloomed, and I felt like i could hear the air in the soundstage!!
This was eight years ago, or so. I never heard much diff w spkr cables either. But, I just picked up a set of Resolution Reference X's. Same thing.....bigger images, with more body and more air!!
I tell u all this because you've got a large investment in your system. I would definately try moving up Synergistic's line!! Definately worth the investment!! Just my 2 cents:)))