Rapier
Pros: Fast, strong, consistent hits, great with defender/other shields, great for pvm/pking
Cons: Not many, recharge 2m,
Maul
Pros: High hits, great combos, switch with gmaul, great for veng combos, pking wep
Cons: Easy to get veng comboed. e.p, dher, takes pl8/legs off his venged, u hit 500 his veng hits 400, arm/axe on gf
Don't really know the others, sorry hope this helps, might of got some wrong but yea
Maul is good for hitting really high.
Rapier is "eh" for Pking, but awesome for PvM.
Cls is good for pretty much everything, for choosing this or the Rapier, comes down to the pure stats of it.
Obviously chaotic staff. For rapier you can just use vine whip, Ccb = royal, Maul = dh or godswords, cls = anything really. Staff is the best staff in game. No question.