Now first off let me state that i have leveled both clerics and favored souls to 20, so i have actually played both classes all the way through the game in most of the dungeons.
And i have seen nothing to make favored souls even remotely superior to clerics in any way except a little extra hps/spell points. Maybe someone can correct me on this one...
Favored souls get a few enhancements/feats that will boost their melee ability with a specialized weapon up a little, but nothing that will really make any difference compared to a cleric. a few extra to hit/damage, not much there. They also get a couple free boosts like +10 elemental resist, again, not really a huge benefit when you can easily cast elemental protection spells or use airships.
Clerics get all the spells and don't have to pay to switch them out. Clerics can get that great healing blast/aura for very cheap enhancement costs. Clerics can turn, favored souls can't. Clerics have one stat for their spells (wisdom) where as favored souls are screwed and are broken down into 2 stats (wisdom for dc, charisma for sp's).
I don't see really any benefit for favored souls for their huge cost in favor needed(or having to buy) compared to a good cleric. Maybe someone can fill me in, because the first thing i plan to do with my fvs is tr him into a more useful cleric instead.
So, is playing a fvs worth not having free spells, turning, enhancement healing burst/aura, one stat needed (wisdom), etc...