someone correct me if im wrong.
fire does the most damage per hit.
light will do the most damage as a whole, meaning out of a number of hits, your average damage will be higher than with fire or ice (?)
ice does the least damage, but has frostbite to save on hp pots and whatnot.
if youre doing pure pve, id say fire or ice. pvp, fire or light.
that changes with different types of builds though. and seeing how its almost 1 in the morning, i am sleepy. so if you still need help, pm me

id be happy to help