Depends somewhat on the lengths you need but I buy in bulk so will usually look at Amazon for Prime eligible stuff in the length and gauge I'm interested in. I last bought a 250' roll of 14g a couple years ago and am about to use the last of that. http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=speaker%20wire&sprefix=speaker+%2Caps&rh=i%3Aaps%2Ck%3Aspeaker%20wire