Speaker cable upgrade please help........

I am very happy with where my system is today but I still wonder if I am hearing everything it is capable of. Do the Audioquest cv-6 24dbs speaker cables I am using allow me to hear what my amplifier and source are capable of? I have coughed up the dough on some nice interconnects going between Acoustic Zen Silver Ref II and Audioquest Cheetah 36v dbs but have kept my speaker cables through several system upgrades. I love the sound I have now and wonder if a move into one of the following would provide much improvement. I am looking at the following: Audio Magic Sorcerer, Coincident TRS or TRS Extreme, Audioquest Mont Blanc or Volcano, Audience, others I should be considering? I have been hesitating on this upgrade because I know there are two schools on high end cables. I know of audiophiles who have $10k in speakers and really nice digital and amplifier and use home depot speaker cable. I also see those who go crazy and spend as much on cable as on the components upstream. Thanks for your much needed help.