I like heavy mono for flipping. This is one time you reall need to see your line. Also it is much cheaper. I used flouro for a while flipping, but it gets expensive. Almost every fish you catch will get tangled in something, causing you to re-tie after every other fish. So I am trying mono this year, and so far it hasn't cost me any fish.

On the other hand, for all other plastics I am right there with Elwood and KyNitro - You cannont beat the Flouro/tungsten combo, I can feel the fish approaching it!! LOL.