Man spirits are better than everything else, but there's no Intuition tradition with Man and no mentor that gives Man/Combat either.
Fire spirits do Engulf with Element Aura. Engulf is DV=Force, Energy Aura adds +4 DV to melee attacks, so Engulf ends up doing Force+4. Water spirits can also do Force+4 engulfs, but have lower stats (2 less agility, in particular). Also, there's no Combat/Water mentor other than Shark, and Shark comes with a suicidal drawback.