I'd like to upgrade my speaker wire


I am fairly new here and still learning.  I have a Yamaha R803 receiver and Vandersteen model 1s.  I'm happy with them for now but I'd like to upgrade my speaker wire. I presently have 14 gauge wire I bought years ago at Best Buy. I need 40 feet.  I've read great reviews about Back Cat but I think 40 feet may be a little pricey for me. I'd greatly appreciate any advice on a good quality wire at a reasonable cost. Maybe under $500?   BTW,  I bought Jim Smith's book as recommended here, great advice, thanks.   Doug
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rbstehno"-you need to buy jim smiths book on how to get better sound. Jim states to never put your gear in the middle between the speakers, put your gear on the side"

It's just a book no one single person or entity can prescribe the proper setup, configuration, and calibration of a Music Reproduction System with which they have no experience, information or knowledge. 
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If you are still doing research for speaker cable, look into monoprice.com, and search under their Audio Cable section.  CNET uses cabling from them for their equipment testing.