I've only used Torpedo and have no issues with it. Blood Run stuff is good quality so shop by price or availability, I guess.
Neither place has a wire factory so chances are they are both filling their service spools from the 100,000 foot spools from Acme Wire Company - or perhaps Fung Chow Wire company.
The South End provides useful resources and discussion forums for those that fish The South End of Lake Michigan for Salmon, Steelhead, Perch, and Bass as well as elsewhere in the Region and Chicago area.