I prefer using Lilia instead of Sybilla to tank lichs nowadays, since her higher HP gives my healers more leeway. Even with Sybilla's other stats being better, I have an odd time keeping her alive against the lich king or any situation with a lich and multiple ranged enemies joining it.

AW Lilia is obviously great in poison maps too, assuming you don't have Marr, anyway.

For Memento's event though, people are suggesting to level/AW Anya, so I'll probably have to get off my ass and get those last 10 levels on her to awaken her.