Here's another vote for Paladin/Oracle. Angel-blooded Aasimar Oracle of Lore specifically.. But even better is the revelation:
Sidestep Secret (Su): Your innate understanding of the universe has granted you preternatural reflexes and the uncanny ability to step out of danger at the very last second. Add your Charisma modifier (instead of your Dexterity modifier) to your Armor Class and all Reflex saving throws. Your armor's maximum Dexterity bonus applies to your Charisma instead of your Dexterity.
Boom, dex is almost completely negated, and since you get CHA bonus to all saves as a paladin, (it's unclear to me if these effects stack) then your a save monster. Dump WIS a bit as well, because your CHA bonus covers the pain of a low Will save.
Pump STR, CHA, and CON. As a Lore oracle, you don't really need int much either if you take revelation:
Lore Keeper (Ex): Instead of encyclopedic knowledge, you learn most of your information through tales, songs, and poems. You may use your Charisma modifier instead of your Intelligence modifier on all Knowledge checks.
The following is another useful revelation in my opinion for situational use:
Arcane Archivist (Su): Your experience with lore-filled tomes has granted you the ability to cast arcane spells as if they were on your spell list. Once per day, you can cast a spell from the sorcerer/wizard spell list as if it were on your list of spells known. The spell consumes a spell slot one level higher than the level of the spell. You must have a spellbook containing the spell to cast it in this way, and the spell is erased when you complete the casting. You must be at least 11th level to select this revelation.
Add on the full BAB, smite, and swift action healing of a Paladin, and you've got an extremely survivable knowledge monster.
