The so called GBC is I think the bulk version of Audioquest Type 6 cable. Look here for user reviews and product info for both:
http://www.audioreview.com/cat/cables/speaker-cables/audioquest/type-6/PRD_116385_1584crx.aspx
http://www.audioreview.com/cat/cables/speaker-cables/audioquest/glc/PRD_124891_1584crx.aspx
http://whathifi.com/forums/p/2194/11916.aspx
http://www.avland.co.uk/audioquest/type6/type6.htm
Kimber 4VS and 4TC speaker cables are another very good deal (under $100 USD for 8ft. pair).
http://www.audioadvisor.com/products.asp?dept=26
If you are looking for a really reasonable route to well built but no nonsense cables that will probably perform better than your >20 year old Monsters for less than $70 for both 1m interconnects and terminated 8ft. speaker cables before shipping, try this site:
http://www.bluejeanscable.com/
Finally, when you are ready to suspend reality and invest up the cable ladder, The Cable Company (http://www.thecableco.com/) is a terrific place to purchase higher end cables because they carry many brands and let you try them before you buy.
http://www.audioreview.com/cat/cables/speaker-cables/audioquest/type-6/PRD_116385_1584crx.aspx
http://www.audioreview.com/cat/cables/speaker-cables/audioquest/glc/PRD_124891_1584crx.aspx
http://whathifi.com/forums/p/2194/11916.aspx
http://www.avland.co.uk/audioquest/type6/type6.htm
Kimber 4VS and 4TC speaker cables are another very good deal (under $100 USD for 8ft. pair).
http://www.audioadvisor.com/products.asp?dept=26
If you are looking for a really reasonable route to well built but no nonsense cables that will probably perform better than your >20 year old Monsters for less than $70 for both 1m interconnects and terminated 8ft. speaker cables before shipping, try this site:
http://www.bluejeanscable.com/
Finally, when you are ready to suspend reality and invest up the cable ladder, The Cable Company (http://www.thecableco.com/) is a terrific place to purchase higher end cables because they carry many brands and let you try them before you buy.