The only fluorocarbon line I've ever used was Abraz-X, and I didn't have a ton of trouble with it, but it'd still take some set on the spool (on a baitcaster, mind you). I was using 15lb, so that probably had something to do with it. Good learning experience in terms of what I don't like in a main line.
I dunno anything about TangleFree (though I trust your advice, Tom), but I can speak to the fact that KVD line conditioner is magical. I soak the spool the night before, then hit it again with a couple squirts before I leave the house to fish.