If you're looking ahead into the future, and are wondering what class to pick, Then you can use some of this to help determine.
1) Champ/Monk Class:
Pro's
-This class gives you the ability to run some of the best leeches around. That basically means getting levels for other players, By killing monster for them
The Average pay for this service is 1-2mill Per 45 minutes or so. Keep in mind however that Extremely good gears are required for this.
You can take a look around in the Selling threads, to get a Good Idea of what the Leeches look like.
-It requires fairly good gear to do this; However MvP'ing is quite simple on a Champ class, and you can easily level up with it.
I've seen a Champ Class kill the MvP StormyKnight with two Asura's.
-In PvP, You're a fairly hard class to kill. You have Snap and Heal, which enables you to get away, and heal up before re-engaging.
You have Finger offense, Asura, Occult, and plenty of other Strong Skills.
-In Woe, You're really never short on Action. Most of the time, you'll be Asura'ing Frozen enemys.
Con's:
-To be Sucessful, You'll need really good Gear. You Can make the Class work with fairly good gear, however it will be harder to leech, MvP, and kill in general.
- You'll most likely be joining the Majority of the Champ population on this server, That spams Asura non-stop. It happens.
-theres probably alot more, But I'm tired D;
2) Priest/HighPriest:
Pro's
-You can level with little, to no Gear. Although it is slow, you can easily Healbomb Everything.
-Once you get Instant cast gear, and other Gear that improves survivablity, You can start leeching in Nif.
Although it doesn't pay as much as the Champ leeches, it also isn't as hard, or Zeny comsuming (Gear wise)
-With Top Gears, You're easily Unkillable in a PvP situation (at least 1 on 1, or 1 on 2)
-Your Super Quest item is Basically one of the most useful in the Game at the moment (IMHO)
-With IC gears, Leveling is a Breeze.
-Everyone wants a Priest or Highpriest in thier Guilds.
Con's.
-You have limmited Damage dealing Options. At least untill you get your SQI. Basically you can be unkillable, But its can also be a pain to kill
Other classes. Paladin VS. Highpriest duels actually go on forever.
-Your Woe Duties can be boring at time. Most of the time, You'll only be supporting your Guild, and alot of the time, you'll be stuck right near the Emp.
-You'll be getting an Endless Flood Of "Buff pls" Or "warp pls" Wherever you go.
-Theres probably more, But I'm going to bed.
Personally, I would pick Priest/Highpriest.