I think that biological it`s the best of them,the strenth it`s the best power in Sonny 2.The other classes only balance the power but the biological one it`s really the most powerfull of them. With Respect, Shadow6421
Biological is very powerful, but I don't like it for some reason. Psychological have a combo that kills all enemies in one shot because it does more than 100% of the target's health, so it basically kills the enemy no matter how much health it has. Hydraulics can render a lone enemy helpless with freeze combo or dish out massive damage if you are using hot blooded. All three classes are awesome, I wonder how Krin made them so balanced really. Still, I don't like biological very much, don't know why.
Biological is a no brainer, has crystallize for defense, withdrawal combo for offense. Also criticals more than any other class (more speed=more crits) and is the fastest of all classes if specced right.
Hydraulic is almost unkillable with a good cold hydro build. Only downside is that it deals its damage much slower than biological.
Psychological I would say overall isn't as versatile as the above two. However, ultimatum+free will is a good defense when your team is dying.
In terms of fun (at the moment, it cycles around):
I'm bored sick with biological after finishing another legend run (new computer, so third time I had to go through the painful ordeal). Psychological is a little fresher in my mind, but Hydraulic has been my long time favorite.