my fravorites are..
zidane- (cannot be removed most of time) plus is cool and very strong in trance.. deep down gatueneed best trancer
dagger- well a hero cant go without a hot heroic like dagger.. plus her later aeons hit high sometimes with boost and plus.. did i mention shes hot
vivi- strong black magic powers makes lulu look like crap (but i think hes a total wimp)
adamant-great powers and effects plus his throwing comes really helpful espesily in boss fights like the arc and several bosses afterward

ones i dont use
seinter- his sword skills are turly amzign but looks kindof lame but if i had lost any charcters in the game i choose this guy.
freya- strong and powerful plus reirs wind is helpful but she lacks speed very slow with jump ablity and plus she gots very little weapons she can use that i know of.
eiko- a healer alreayd got one plus dagger hotter.
quina- BIG. FAT. UGLY. STUPID. is those words reason engoht and besides she retarded with weapons.. i do have to say her trance looks pretty dang cool.
beatix- god why couldnt this cute kick ass person stay with the party..............................................................