Core Rulebook
Gamemastery Guide
Advanced Player's Guide
Advanced Race Guide
Ultimate Magic
Ultimate Combat
Ultimate Campaign
Bestiary 1
Bestiary 2
Bestiary 3
NPC Codex
And from the Campaign Setting line: Inner Sea World Guide (replacement for the old 3.5 Campaign Setting hardcover).
Yes, Ultimate Equipment is also an HC (a hardcover).
Upcoming HCs:
Mythic Adventures (August this year)
Bestiary 4 (October or so this year)
and Pathfinder Chronicles Campaign Setting (OOP but available in non-mint)
and Pathfinder Chronicles Campaign Setting (OOP but available in non-mint)
Yes, if you're a completist with regard to all the hardcovers. However, the content of that book has been superceded by the Inner Sea World Guide.
I know but there are interesting things in it that are found nowhere else. I guess it depends how much you want to know about Golarion. I should also have noted that along with that it is 3.5 and not 100% Pathfinder.
How is Ultimate Equipment? Only one I haven't bought.
I really enjoy the mundane items in Ultimate Equipment. We have a party alchemist and he has a lot of options available with the alchemical items and poisons.
But don't take my word for it, Ultimate Equipment's contents are here on the Paizo.com PRD. Take a look through it.
I like Ultimate Equipment in general. It makes good re-use of the item card illustrations, so there's no lack of illustrations in the book either.
I've wrestled with getting Ultimate Equipment in print -- it seems like the most desirable of the "Ultimate" series to me.
Loved NPC Codex.
Thanks a ton for the responses regarding Ultimate Equipment -- definitely considering it and I'll check out the PRD. Thanks!