Well, I'm not an expert but I was just outfitted with two new boat rods down at Red Top in your neck of the woods. The guys there had both core and wire but strongly advised I go with lead core. If memory serves me
1) the wire line doesn't retrieve back onto the real as nicely as lead core
2) lead core is heavier and will sink nicely
3) I believe they said the wire is more visable to the fish
4) Most if not all lead core is color segmented so you know exactly how much line is out and how deep it is. I think it's 30' segments. for every 30' you let out I think the line sinks 10'
anyone else wants to chime in be my guest. Thats' about all I know on the subject