WW dragon AE's - worth trying to resist?

[Malrubius]

If a level 60 is fighting the likes of Entariz, Ayillish, etc., should I bother trying to resist their AE dmg/dispells (i.e. swap out solid hp/mana gear with high resist gear)?

Or should I just assume I'm not gonna resist much if at all - and keep my good (but not resisty) gear on?

If I DO try to crank up resists, how high does it need to be to make much of a difference?