KF/FS or KF/SL others are just not that good, maybe you can try FF KF. They aren't bad, are just not the best for meta, beacuse they need to be sitting arround and going from there. Can't rush or even make one champ go alone. They are fun, but just not worth if you're searching for a meta bg.
Tortun trade is pretty useless right now. Backlack also makes their entire setup complete trash. Ponderous also hurts them pretty badly. All in all they are just kind of bad :-/
