Congratulations! I own the same speakers myself. Mine are, however, in a smaller room, and I use monoblock amplifiers so do not have to worry about the length of cable. As far as cable choice, please feed your Guarneri's good stuff. I have used AQ Argent internally biwried and they were good, then moved up to AQ Clear and they were even better. If you can, use silver wire, though a 20 foot run will surely cost you a bundle. May want to check out Home Grown Audio's speaker cable. But make no mistake about it, the Guarneri's are capable of incredible soundstaging, accuracy, etc. and if you do not usee top nothc cables you will limet their performance.
Sonus faber Musica,and Guarneri
I recently purchased a pair of Sonus Faber Guarneri speakers and Musica amp through Audiogon. I need some help with my cable selection. One of my speakers is about 20 feet from the amp and the other is about 10feet. There is no way I can rearrange the room. What should I do? Thanks for your input