the stacking (or nonstacking) of pally heal abilities

[MithrilSoul]

It seems to me that a human paladin has access to at least 2, possibly 3, methods of increasing the size of heals when the paladin is healing himself. And that's not even taking into account any gear that might do this; I am talking just based on the paladin's innate abilities.

* Human Improved Recovery - 10% increase to incoming healing spells
* Paladin Devotion - 10% increase to outgoing healing spells
* HoTD prestige bonus - 10% increase to incoming healing ("positive energy") effects

I have two questions about these things:

1. Do they all stack? If I was a human HoTD pally (yes I know KoTC is considered vastly superior...for now just play along with my game) and had HoTD I, Human Imp Rec I, and Pal Devotion I, would that be a net 30% increase on my self-heals? Or do none of them stack, thus resulting in a rather disappointing 10% increase?

2. Do all three of those things listed above impact the healing magnitude of our Lay on Hands ability? I ask because LoH is not technically a "spell," and the wording of at least the Imp Rec and Dev enhancements says healing spells. So I'm trying to figure out whether any of them are LoH boosters or not.

Thanks.

EDIT: now that I think about it, does the Human Improved Recovery also work with incoming healing from healing wands? Potions? Or just spells?

[Creeper]

It seems to me that a human paladin has access to at least 2, possibly 3, methods of increasing the size of heals when the paladin is healing himself. And that's not even taking into account any gear that might do this; I am talking just based on the paladin's innate abilities.

* Human Improved Recovery - 10% increase to incoming healing spells
* Paladin Devotion - 10% increase to outgoing healing spells
* HoTD prestige bonus - 10% increase to incoming healing ("positive energy") effects

I have two questions about these things:

1. Do they all stack? If I was a human HoTD pally (yes I know KoTC is considered vastly superior...for now just play along with my game) and had HoTD I, Human Imp Rec I, and Pal Devotion I, would that be a net 30% increase on my self-heals? Or do none of them stack, thus resulting in a rather disappointing 10% increase?

2. Do all three of those things listed above impact the healing magnitude of our Lay on Hands ability? I ask because LoH is not technically a "spell," and the wording of at least the Imp Rec and Dev enhancements says healing spells. So I'm trying to figure out whether any of them are LoH boosters or not.

Thanks.

Yes they stack and I am ALMOST certain that they also work on LOH except for the devotion enhancements.

[Lehrman]

The human improved recovery and undead hunter definitely work with lay hands as well as all positive spells and Sov

[MithrilSoul]

Excellent, thanks all.