First of all :
High Priests - I don't know either, To me, High Priests are hot & charming. And mostly -- High Priests is known as popular job in znRO. And I use High Priests in every server I'm in.
Assassin Cross - Too bad, can't vote for many jobs. Anyways, Assassin Cross is hawt. (Girl sprites win) Incredibly strong(Not to be confused with high-vitality built Assassin, because it goes like this:
High Vitality = More Acid Demonstration damage, Immune to some other Assassin's attack)
Assassin Cross is sprite friendly. =)
Creator or Biochemist - Strong and cute, Might look fat as well, Sprite-friendly & an MVP-hunter. Great for PvP & MvP.
Champion - Strong, doesn't get easily defeated(Yes for me, I can actually tank Sonic Blows though. But it's not me about being boastful. However this goes if you have some good equipments or armor to tank Elemental weapons & converter.)
Tanking:
Yes, no lies. I can actually tank Sonic Blows by using a High Priest(natural).
This is because of my armor(s) & resist potions, I switch armors = Ghostring, Elemental Armors, Deadly & HP Armors. But still, Sonic Blow can deal strong & high damage even if you are into switching & resist potions, So it's better to pot seeds(or berries in some, way) even if you are a support-type job to avoid getting killed. Or can even spam seeds when someone is spamming Sonic Blow on you, If your connection is pretty high. Maybe you can easily tank this things without even getting stupid lags.
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Had fun with this thread. Amazing ;P