Quote Originally Posted by KarstenS View Post
Same question I also did think over. Allagan book ist the onliest one before high allagan book with crit. I will try to farm the T5 book today.

But one question ist still in my mind: make it sense to replace it with something else before I someday get the high allagan book?
Yes. As the item level of your weapon goes up, so does the magic damage and mind bonus on the weapon. Weapon damage and mind have the greatest impact on base healing than any other statistic. That would make the Omnilex Animus, Tidal Wave Codex, and Weathered Book of Diamonds all more effective than the Allagan Grimoire.