This x2.
I had invizx on one of my reels and straight swapped for sniper at same #. Sniper had less stretch, more sensitivity, more supple, and more abrasion resistance. I've had frays in my invizx I could snap with an easy tug. With sniper similar frays were much more difficult to snap.
I haven't tried fx2 or sx1, braid as I want to try seaguar smackdown, but I'm really leaning Sunline lately.