General

Reboot world is all about class balancing. Choose a class that you enjoy playing and play it; there really shouldn't be any initial concern for damage or anything like that.

Strong unfunded as everyone has stated above, Demon Avenger is probably the best and currently with the free 200 reboot pots you get you won't buy any pots until level 120 ish. But if you want a fun class tell us your preferences.

Tell us what type of class your looking for and we can (try to) tell you what classes have said characteristics. Otherwise, play what you like.

I'd say Demon Avenger or Xenon. Strong classes unfunded, good link skills if you get bored of them.

the Demon would be a solid class (esp Slayer) for Rebott world.