Ginger Lillie > Regular Lillie
I think the best answer to Jolteon and Glaceon EX is Mega Alakazam. as their attacks don't stop any side effects, the pyschic king can still do major damage. Now Jolteon and Glaceon are just 170 HP EX Pokémon that can do a mere 70 damage. Which won't be enough to knock out a Mega in two turns.