I get all my lead from England, Buzz Tackle Leads.   The owner has been a friend of mine since the mid-80s and I know he applies the same philosophy to lead as I do to bait.   It uses only the highest quality lead and swivel clamps in its manufacture, and each lead is coated by hand to make sure it meets your expectations.

 

  Given that these are not factory or mass-produced wires, they still have an incredible value for money.