Mesmerize (level 4 spell) or Dazzle (level 49 spell).

[Dwarvesareop]

Hey, besides the longer duration, why should an enchanter use Dazzle instead of Mesmerize ?

My main concern is about charm breaks, mesmerize seems long enough to me to have time to tash and charm again (and it also uses less mana). Which spell do u guys use (even at level 60).
Am I missing something ? For example, does dazzle resist less often than mesmerize ?

Thanks for help !