Im usually think only on pvp, but as second character i want some pve action, so im wondering what class will be good at PVE, especialle Aoe..

Wonder---> Plasma/karma?
Spiritualist?

And at the end... what is a good way to make some money ? Farming mob ?

I would say plasma majin

turtle, plasma buu, ultimate buu, dragon warrior, grand chef (with candy spin).

1st Plasma
2nd Ultimate
3rd Turtle

ultimate??? sorry, but it doesnt seem they have Aoe skill...or im wrong ? =)

spin can be considered an aoe, although having a little range

Its very effective to hide in a corner, in which all the enemies surround you, and then use spin.

Applying wallhugging would make Ultimate and Turtle stand above Plasmas, since both classes hit much harder.

In contrast, Plasmas get's great area coverage with it's moves, and alot more AoEs to choose from. Feign is also great, as you may freely reset your aggro. However, that should'nt be an issue if you have a great tanker.

I hear the spins got nerfed pretty bad. How are they? I'm mostly curious about Taiwan version, but both are relevant.

The nerf has yet to come here to the TW version of the game. However, provided that they've already announced TWDBO updates are not to not be linear to KRDBO, it might be possible that they'd delay/neglect the nerf all together.

The spins were tore down from perfection to horrid in KR, you literally had your damage input HALVED, and it was a nerf that caused massive rage.

The current Ultimate Majin spins are still top tier for any type of PvE, and I suggest whomever that wants to run one, make one now; abuse it as much as you can before the nerf takes place.