Have no idea about druid quests. The most rewarding class to play? Depends... here are my impressions:
Paladin: A watered down priest who wears plate. Can\'t do much damage and takes forever to kill something. From everyone who has played one I have heard very very boring. Also they have no range attack at all.
Priest: Good caster class. Shadow line deals the damage and you can heal yourself. Cool little invunerable shield as well. Just like the mage they are mana dependant and when they run out of mana they are finished.
Rogue: Very quick leveling. Can chain kill with practically no down time. Tons of escape methods at higher levels. Has nice stuns as well. Downside is they are lightly armored and a good warrior will beat a good rogue almost everytime. Actually most classes can beat a rogue if the rogue does not get a jump on them. Their preferred targets are cloth wearers.
Warrior: Ok DPS (Damage Per Second), but it really depends on how you set up your talent tree. Only one "oh shit" card on a 5 minute cooldown - intimidating shout (fear). No viable range damage and usually get eaten by mages. Personally, as a mortal strike warrior, mages are really the only class that gives me trouble. Lower level warriors tend to be pretty bad in DPS and the class doesn\'t really shine until 60. I know Ryu may disagree with me, but I think Protection spec\'d warriors are particularly boring and limited. At mid levels this class can be discouraging to play especially if soloing.
Druid: Jack of all trades, master of none. Bonuses - they can heal and have multiple shapeshifting abilities. Downside - in bear form they can\'t out tank or out dps a warrior and have only 1 viable instant cast spell when not in animal form - moonfire. On the upside they are very good against mages since they can\'t be rooted or polymorphed due to shapeshifting. Can also root and traveling is easy when in the right form. Definitely not the worst class from what I have seen.
Hunter: Has the longest range in the game and a pet to boot. In PvP I have seen hunters just sit back and send their pet in while they don\'t take any damage at all. They also get some nice aspects to make getting places faster before they get their mount. They can melee up close, but range is their ideal situation. Hunters can also solo with ease.
Mages: Supposedly has the highest DPS in the game. Also has the second longest range. A fire mage spec\'d right can do massive damage in a matter of seconds and take my warrior who has 5k in hp down to half. Can polymorph for crowd control, can frost nova for root, can slow with the frost line, has good instant spells and a good instant area effect spell. Traveling isn\'t as good as a druid or a shaman, but a mage can teleport to one of their factions cities and can use a portal at level 40 to take other people along. Also has blink which teleports the mage 20 yards to get out of trouble and they can also summon their own food and drink to replace health and mana. The downside is they are cloth wearers and very mana dependant - once out of mana they are done.
Warlock: My wife has one of these and with the diminishing returns from fear, I think this class is really nerfed. Though they do well against mages, they have trouble against most other classes in PvP. They do get some "pets" and this does help them solo quite well. On the downside their spells are loaded with backend damage - meaning it takes a while to kill something. Also they have no escape spells other than fear and if they have their voidwalker up they can sacrifice it for a shield. They also rely on soulstones to summon pets (except their imp) and create healthstones and stones that resurrect themselves - while this sounds good, those soulstones do not stack in your inventory and it is quite possible to have almost one backpack devoted entirely to them. When these guys run out of mana they could still fall back on their pet if it is still alive.
Shaman: The Alliance really whine about this class. They heal, wear mail and can dish out damage. They also get a nice wolf form to travel as well. My wife started one of these on the PvP server we are on and so far she seems to be enjoying it so it must be easy.
Anyone else can feel free to add to what I said, but those are either my experiences or impressions from all the classes. I am bored at work so sorry if this seemed like a long description.
