I find the Giant Killer comment so funny.
Silversmith Fidelium speaker cables..a giant killer
Boy, cables can be a quagmire. There are good cables for your system at all price ranges. The difficulty is finding the right match.
I'm off the speaker cable search with Fideliums now for 2 years. Not inexpensive, but not stratospheric in price.
IC's - have eliminated Gabriels, Cerious, Teo, High Fidelity, Jena Labs, JPS Labs, and some Stealth models. Without breaking the bank, the Silnote Morpheus III cables are extremely well balanced for $400/pair. I'm trying to score a pair of Silent Source to give them a try. Used is your best bet.
Older products worth searching for are Jade Audio and Sablon.
Morrow Audio makes pretty decent cables. Stay at the MA3 level or higher.