Sometimes lead will outfish copper and vice versa but unless I was sure the core was the better choice I'd run the short copper. Another thing: Unless you got a bunch of guys fishing I'd run that junk line out on a big board if possible or a walleye board if not. If you are bound and determined to run it down the chute spool it onto an Okuma 55 LS (super high speed ) so you can clear the middle of the stern quick if you get a big,hot king tearing around the back of the boat, it's bad enough dodging the wires without another thing that cuts mono in the middle too.