Mage vs necro; my experience

[Jimjam]

Normally people chose to play a necro if they want a pet class and an involved play style.

I suspect this means you are less likely to have a 'pet in sub 70%' caster if the group chooses necro over Mage. Necromancer also plugs gaps where others are inattentive.

In a balanced, attentive group pick an attentive Mage. Of course Netflix precludes that as anything other than hypothetical!