Suggestions for new books

[Caws Rorec]

I received some gift cards and some money from the holidays.

I am currently mulling over which and what book to get.

I currently own:

Core Rule Book
Advanced Player's Guide
Advanced Race Guide
Ultimate Combat
Ultimate Equipment
Ultimate Magic
Bestiary 1
Bestiary 2
Bestiary 3
GameMastery Guide
Pathfinder Campaign Setting World Guide: The Inner Sea
Artifacts and Legends
Fey Revisited
Psionics Expanded: Advanced Psionics Guide
Pathfinder Campaign Setting: Book of the Damned—Volume 3: Horsemen of the Apocalypse

I have been mulling over getting a few books.

Advanced Class Guide - not sure if I should wait until a reprint or not
Bestiary 4 - I have 3, is 4 worth it though?
Monster Codex - Haven't heard much, but it seems more interesting then the NPC codex
Mythic Adventures - Haven't delved too far in, but it seems interesting.
Ultimate Campaign - Has interesting rules that I wouldn't mind having in book form.

I am looking for any suggestions for books.

I have a few pathfinder modules and adventure paths, any suggestions for good modules and adventure paths would be greatly appreciated as well.

[Dafydd]

Inner Sea gods has lots of neat things in it. Mostly for divine concepts, but it is very diverse in that topic. Details all the major gods and lots of minor ones.

Advanced Class Guide has some cool things too. However, waiting for a reprint is not a bad idea. Lots of errors in the first run. (Best Adventure Path I have ever read though.)

Beastiary 4 has Elder Gods and outer dragons. However, it is only good for GMs as very little of it is for the average PC. Still cool stuff, so if you liked 3, you will like 4 too.

Mythic is interesting. I do not own it, but it looks like it could make for some fun adventures.

Ultimate Campaign is mostly for trait. It is a handy tool if you are a GM with players looking to be king.

[Gluttony]

If you like Book of the Damned Volume 3, you'll likely enjoy Volume 1 of it as well (Volume 2 unfortunately feels a bit like filler, especially with so much demon material available elsewhere). BotD Volume 1 provides extra devil material, which is helpful. Infernal resources are somewhat sparse, and every little bit helps.