Meh, we'll see. One reason to why I also dislike CN a bit is because you only rely on her QT in later dungeons. Get 300 MP, use Magic Accelerator for 50 MP (with a passive that reduces the MP cost of Accelerators by 20 MP) and then use QT for 250 MP.
Actually, I got a Magic Knight in lvl 25. I didn't like elsword at first because of his low attack speed. But I got it up to 8% increase and holy shit he's awesome with that. You don't need Aura of Vitality to be on only to deal quick slashes like you needed without attack speed. I also love to spam Wind Blade especially during Aura of Vitality since every z hit gives you 15 MP instead of 5 MP.