There are so many things that come into play, one cannot truly get a straight answer via math.
However, a suitable argument can be made based grossly on level of progression.
T4/ beginning of T5: +mp5 is appropriate
end of T5/ beginning of T6: +crit is appropriate
Sunwell: +haste is appropriate
This is pretty well accepted among the paladin community, there is nothing new here. The reason for the change with progression is also pretty well accepted: fol spam vs. holy light spam. Comparing fol vs holy light ratios of what each individual paladin has, you can easily convert mp5 to crit.
There are exceptions to this however, for my level of progression (cleared Hyjal, 5/9 BT), I have been stacking crit. My spell crit is extremely high right now, and mp5 relatively low. However, a guildie of mine, still stacks mp5 and +heal. We heal completely different in the same level of progression and there is not one clear choice as to what is better. They are just different.
More exceptions:
Group make-up, mp5, crit, mana-efficiency:
- Shadow priest and shaman giving you mana regen? You can stack haste as you dont have to depend on crit or mp5.
- Spamming holy light (down ranked as appropriate)? crit will normally have a higher value of return for each itemized point vs. mp5
- Spamming fol? mp5 will have a higher value of return for each itemized point vs crit.
Gimmick fights:
- bloodboil for instance: I can spam max rank holy light a significant portion of the fight, because of massive damage I am taking. Never mis
Spell crit:
The theory behind alot of the numbers, is to not take into account the increase in hps due to crits, as overhealing does not count. Crit is a way of sustaining yourself throughout the fight due to mana return. While crit will add some +healing the number crunching usually discounts it.
Intellect:
The theory behind alot of the numbers, is that max mana doesn't matter. Except for gimmick fights, you are at max mana only once during the fight, and that is right before you cast your first heal. Int gives you virtually no gain on mana except for the first cast (with the miniscule portion of crit that the intellect gives). Because of this, my suggestion is to base theory crafting numbers for int, based on an equivalency of +heal or hps, and not mana-efficiency.
Yellow gems:
Yellow gems become more of a personal preference. Ask yourself the following questions, and you may need to revisit these questions as progression happens:
1. Do I consistantly get a shadow priest/shaman in my group?
(If yes, +heal and +haste, depending on progression)
2. What is my ratio of FoL to Holy Light?
(If mostly FoL spam, +heal/int gem)
(If mostly HL spam, +crit)
A copy and paste of some numbers I crunched a while back transforming crit into mp5:
Quote:
First off, I theorycraft for myself, so your numbers may vary. From looking at WWS reports, I see that I have a ratio of Holy Light to total amount of heals of 3:4. So everything is based off of that ratio. And like most theorycrafting, I will consider chain casting with no latency issues. (wouldn’t that be nice) Also, I did this always having a 2.0 second HL cast. (numbers can be tweaked slightly if you choose to change that.)
1% crit = xxx mp5?
FoL: 108 mana returned on a 1.5 second cast crit. 108 mana / 150 second * 5 = 3.6 mp5 per 1% crit
HL: 504 mana returned on a 2.0 second cast crit. 504 mana / 200 seconds *5 = 12.6 mp5 per 1% crit.
Transforming that into my ratio:
(3.6 mp5 * 1/4) + (12.6 mp5* 3/4 ) = 10.35 mp5 per 1% crit.
As you can see there, I value crit much more than mp5, as a +10 crit gem is roughly equivalent to 4.7 mp5, and you cannot get a +5mp5 gem to replace it.
:sigh: Sorry for the long drawn out response. But that is my take on the gems.