Best All-round fighter: Apollo, Mara
Best Multirole Bomber: Athena, the Zeus comes close
Best Lightning Bomber: Athena, Artemis DH, Hydra, Artemis
Best Interceptor: Valkyre, Horus comes close, Dragon (unless you're given one with Shivan statistics {sliding, correct ETS ect.}, than its on equal grounds with the Valkyre)
Best Assault Fighter: Hercules (it takes practice and a spin-capable joy to use it - it has massive firepower), Erynes (the ETS is unbalanced, you'll have to be a spider to keep it in rein), Herc 2 (I really miss my 4 primaries as one slot)