BigDan,

After trying both, I settled on light wire leaders made from beading wire.

I know several great pike fishermen that swear by heavy mono/fluorocarbon tippets, but I just did not like the way that such tippets effected the action of my flies.

Light (15 to 20 pound) wire bite tippets around four inches long work best for me.

Up to you, though. Both seem to have their devotees.

Buddy