What's the difference between Super Saiyan and Super Saiyan 2?

It seems Super Saiyan 2 drains my Ki a lot faster than just regular Super Saiyan. Is there a substantial difference between them that makes the much faster drained Ki worth it? My character is a Melee Saiyan, so my character doesn't exactly have much Ki to spare.

There are some slight differences in different battle behaviors.

This video breaks it all down

But the key points are -

• Combos - SSJ2 is better
• Strike Supers - SSJ2 is better
• Ki Blasts - SSJ2 is better
• Ki Ultimates - SSJ2 is better
• Transformation Duration - SSJ is better

Also SSJ2 gives you lighting discharge "aura" so there's that.