Mega Mage vs. Shadow - Worth It? Advice?

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EDIT: Since I created this post, I have come much more aware of the MM set, and honestly, just more experience with an enchantress. I can assure you that MM is in fact better suited than the Shadow Set. Feel free to read through the posts as they are very informative though.

I am in a bit of a dilemma. I have a set of Shadow currently, and am going to buy the shadow glow stick to complete the set and get the set bonus. I am level 53 at the moment, and and am trying to plan out my gear for when I get to 55. I have spec'd out Mega Mage for a comparison (By looking at the specs, it seems Mega is the only realistic option for a pure Int Mage to upgrade to). And have a few concerns.

First, the price. I know right now I could get a set for 2 - 2.5 mil ish. I know this price will come down as more people get the set and want to sell. I am content with paying for this if it is worth it. Which brings me to my next concern.

Is it worth it?

Here are stats for my build (pure int) wearing a champions Fine Champion's Fine Crystal Ring. I have two options, shadow (using a glow stick of shadows) and Mega mage (using Mega Mage's Gemstone Wand), the following are the results.



The differences:
Mega deals 39 MORE points of Damage (I used the max achievable damage from the weapon's range)
Mega offers 21% LESS Hit%
Mega offers 17 LESS crit
Mega offer 18 LESS H/s (which I am not totally concerned about)
Mega offers 18 MORE M/s (definite positive)
Mega offers 20 MORE Armor (definite positive)

When checking out Physiologic's advanced mechanics thread, he concluded that crit doubled damage approximately crit% of the time. So, when looking at the Shadow set with 17% more crit, I have a 17% better chance of hitting double damage.

Shadow Base Damage: 186
186*2 = 372 damage dealt 25% of the time
So, for 100 hits I will hit 100-25=75 regular hits and 25 crits.
(75*186)+(25*372)= 23250 damage dealt (per 100 hits).

Mega Mage Base Damage:225
225*2 = 450 damage dealt 8% of the time
So, for 100 hits I will hit 100-8=92 regular hits and 8 crits.
(92*225)+(8*450)= 24300 damage dealt (per 100 hits).

Now I will take into consideration my hit percentage.

With the Shadow Set and my attributes, I receive a 112% hit rate. This is 21% greater than that of the Mega Mage set.

For calculations sake, lets assume our opponent has 12% dodge. (this allows us to assume Shadow Set gives us 100% hit rate, and Mega gives 79%, and leaves out all of the messy calculations.)

I take the crit calculated damage of both sets, 23250 for shadow, and 24300 for Mega, and multiply by their hit%.

Shadow = 23250(100%) = 23250 landed damage points
Mega = 24300(79%) = 19197 landed damage points

We have just concluded that the full Shadow set actually does more damage per 100 hits than Mega Mage (the 2.5 million gold set) by a whopping 4053 damage points! (that is 17.4% less than a lvl 50 set)

So, damage is a definite negative about the set. lets look at the rest.

The Mega Mage gives you 20 more Armor (which is a very large amount). the base armor of the Shadow set is 109 (for my build), so these 20 points calculate to be an 18.35% increase in Armor. (When you think about the armor, for arguments sake, we will pretend you were just standing there getting damage dealt to you). You would last 18.35% longer by wearing the Mega Mage set as opposed to the Shadow. However, when you look back at the damage calculations, you will be in a fight for 17.4% longer (due to the fact that you deal less damage) with the Mega Mage set. which means you will only technically see a difference of 0.918% or about a 110 point (only 1 more than Shadow) armor rating. (I know damage and armor aren't directly correlated, especially when facing high level bosses, but when talking about minibosses or packs of mobs where one of their crits won't knock you out in one hit, this idea applies).

The next is M/s. I can't really argue any point about this one since it's pretty cut and dry. The more M/s you have, the faster your mana regenerates. However, at a certain point (unless you are spamming mana shield, which is a very valid point), you won't need it to respawn any faster. I am right on this boundary now. If I use my spells intelligently, I can easily go a whole run without using any mana pots (and I spam my spells for the most part). And if I host a run, I will farm pots while I am using them so it cancels out.

So to end this extremely drawn out post, I would like to hit on the main points.

Shadow Set deals 11.78% more damage
Mega Mage Set provides 0.918% (1 point) more armor
Mega Mage Set provides 18 more M/s (potentially not needed, i.e. mana pots)

What do you guys reccomend?
Spend 2.5 Million for a 1 points of armor, and 18 points of M/s?
Just stick with the Shadow and wait for some new gear?
Wait for improvements on the crafted Mega Mage?

Thanks for reading, look forward to reading your responses.