Pline in 4,6, 8 spools are in the bag. Gotta replace the 6 this year and will look at the CFX, as Nick has mentioned this more than once. Transfer to smaller tipppet holder as needed. No issues so far. It is a bit more limp than the $15 spools, but still works well.
We've used nothing but 20-30 lb CFX Floruo as top shots for the hundreds of tuna charters I've done. The stuff is unbelievably tough. I can't tell you how many times I've had a customer point out a leader that was roughed up from a blue shark or just general abuse, and we always tell them just fish it. The stuff just never breaks.
After a couple years of using it on the ocean I picked up some 8 lb to try in the sound and its been just as tough. I don't fish flouro a ton in the sound but it's been great when I have.