Cora has the best Archer class but Bellato makes the best ranger in the game of RF for being natural dodgers and specializes in guns.Bellato has the skill which increases their dodge rate since most rangers are dodge build they go for bellato but you should try other races as well.There many strong rangers in both acc and ccc,acc launcher class in siege kit is the strongest,if you have a good high level(RF powerleveling)weapon(RF online gold)you can kill mostly all with one shot but you will be race target everytime and since you can move in siege mode.
Bells are famous for there dodge and maus but you can't dodge the lot of aoes from cora mages so that it's still hard for pvp and maus cost a lot of money if the go boom and coras have the strongest mages and the summons like the stun typ that don't remember the name are a pain in the ass.
Since they are a launcher class not so much a ranger,you've played all the ranger classes and you'd say out side of acc,it is best,you mean bell has its moments but the bell one is more of a support class.Bell the guns which is crut locking but not a lot of damg so that can back fire,cora specializes in bows which do more spike damg which you think is more useful in pvp,plus the range on them is godly with the buff and they have a net.