Just my 2 cents, but as a Warrior I like Flash during speed runs. When chain pulling and Overpower usage can lead to TP starvation, I'd rather have that one aoe threat skill that doesn't use TP (Cyclone doesn't, but building Wrath stacks requires either Infuriate or TP).
The rest has already been said - Voke and Conva are the ones that I really like, FF rarely feels useful, but I sometimes pop it during Unchained + Berserk + Bloodbath to bring the entire effect somewhere near a proper def CD.
Mantra is half a Conva that applies to your party, fairly weak in total effect unless the party actually needs more heals. IR is fun to use, more damage never hurts.