Skylanders Giants LightCore - The good old days

Ran across this old ad today on YouTube. Ahhh... The good old days. Ha, back when LightCore was new and cool. But at least they chose Prism Break because he has the best LightCore effect according to the voting at our house. Drobot got voted the worst LightCore. It looks like he will stay at the bottom of the list unless Light Core Hex is extremely pathetic.
Which is your favorite LightCore? Which is the worst? Do you have a favorite one coming in Skylanders Swap Force?