i heard a lot good words about killerbee tactic - but never tried.
i tried with nice results Volliz tweak and, of course, Predator. Volliz is amazing with strong teams, Predator is f*cking amazing with everything u'll play .
now am gonna test a little bit with my Portugal national team Mr L tactic and am gonna try maybe 4-4-2 Bluth's, cos 4-4-2 is my always favourite formation .
anyway, if u looking for more information, like screenshots etc. check threads with those tactics and look on my posts.
have fun with FMC m8.