Hi there, first post on here but have a few valid arguments.
First off, I never use FoF, cause unless used perfectly and under good conditions it's not enough of a gain(personally) to warrant using it. This is in my current gear which is 496 ilvl. Rocking about 5k haste 5k crit.
That's the only log I can provide as my guild logs privately but I have numerous rank1 and most fights in the top 10 at least.
And that's with my current gear, no use of FoF, might be something for y'all to look at. Works well for me, rarely capping unless unavoidable, rarely starved (using eb on cd unless lust is up or trinket icd/tb is almost ready.
Finally, someone who uses their brain over a simulator.