Is the set worth getting? Void armor doesn't give any magic attack bonus, meaning that it has a lower accuracy than Ahrim's. Howver, the full set grants a 30% accuracy. Does this make up for the lack of any magic attack bonus? Is a 30% bonus better than the +58 magic attack Ahrim's robes give?

On personal observation, Void Mage is about the same accuracy as mystic robes, if not slightly better.

 

In terms of just magic accuracy Ahrims is much better, however the benefit of void mage is that the helms can be easily switched for increased hybriding bonuses.

 

So if your just using mage stick with Ahrims, but if you are using more than one combat style you may want to consider using Void.