Which Order Do You Play The ME3 DLCs In?

I've never tried Citadel after the main campaign.  I guess I just find the end so dramatic and emotional (but let's not get into the ending, for the love of god no!) that I have to walk away and say that's that.  End it there.

I'm the same with ME2, the Suicide Mission is so damn epic I just turn off the game and I'm done.  Going back to the Normandy seems like an anti-climax to me.

Oops, forgot From Ashes...

Do you do Leviathan all in one swoop then?

Omega - never (it's true Played it once and never again... might change it at some point)
From Ashes - depends on whether I want to take the VS. If not, then as early as possible/on the way to Grissom Academy
Leviathan - typically before Thessia, because it can't hurt to quickly go see what Bryson wants before going to the Councilor, right?
Citadel - right before Cronos, always. Last chance for some fun

From Ashes>Omega>Citadel>Leviathan

I forgot From Ashes too. I usually get it done right off the bat. 

I always forget it, probably cause it should be in the main game. 

First: either Leviathan or Omega
Second: the other of the two
Third: Citadel dlc after finishing the main story and choosing destroy. My sheps deserve to "end" with all their companions, not with whatever the me3 ending was.

I don't think I got very emotional on the old board over the ending; I just said what I didn't like about it.  Anyways, the mods removed the choices and just end the war, hence, the Citadel get together and party, I wouldn't have touched the game again if not for the mods. I find the main meat of the game "draggy" so the party was a relief.

ME2 always ended positively so I always do LotSB after.    I treat it like a bonus gift because it's a fav ME2 DLC. 

From Ashes - right after the first visit to the Citadel - for the PPR
Leviathan - begin after Surkesh finish after the coup
Omega - before Horizon  (imo Aria is boring)
Citadel - begin after the coup (for the armor) finish after Horizon cause I like to have a full party... it's good to say bye to each and everyone

excellent

Mass Effect 3 is honestly a game where the DLC doesn't really fit into the story when you play it. There's a lot of urgency going on to do something else and go somewhere else. I do the DLC of course, but it feels awkward when you put it into the game.

From Ashes is the one mission that feels organic to the actual pacing and plot of the story. It's also one of the more optional ones, though the inclusion of Javik actually feels as though he should not have been left to DLC.

Omega is the next that feels like it fits into the game well, though the timing is kind of clunky. Which makes sense, considering that it was essentially left out of the game from the start, with development added as time went on. It's got the feel of something that should have been included in the vanilla version, while having the irritating traits of DLC (arbitrary unusable characters from the squad, lack of crossover effect into the game proper).

Leviathan is retroactively critical for the plot, which is funny since it was essentially made in response to the ending, and not having enough build-up to the Catalyst. It doesn't fit into the pacing of the game for complex reasons (IMO of course): The first reason is that both the game proper and the DLC have a sense of their own driven urgency. You can start the DLC at any point, though I think it works best after the Coup on the Citadel. Once you start it, the DLC has a sense of urgency to accomplish the mission, which is weird, as the climax of the DLC would work best after Thessia... in which case you're desperately tracing a lead to Cerberus, both during and immediately concluding the mission. It's a catch-22 in narrative construction: The game and the DLC are plot/lore wise very important for each other, but as far as fitting into each other without disrupting the flow of the narrative and growth of the story, they're like magnets that have dual polarity.

Citadel is a DLC that is nice as its own, but is just plain so disjointed from the rest of the game in tone, narrative connection, and style that I find it hard to really like it as much as I want to, especially the Party. I think that there should have been more connection to the game-proper, and the tone of at least the first part of the DLC should have had a more serious atmosphere. I know that this was something that several people complained about in the main game, but to just break away from an arguable race against time to build the Crucible and deploy it with the rapidly dwindling military power of the galaxy to go out and party or follow an idiot plot of a clone trying to perform identity theft and playing it for laughs is too unbelievable and disjointed. That's why I'm more critical of Citadel now than when it first came out. If I could have it my way, I would have made the clone plot more serious and more long-winded, giving it an actual threat (like say, performing terrorism or doing something that might actually really damage the war effort), taking itself more seriously as a story, and involving more ME2 characters (particularly Miranda, and that's not just favoritism here, but she would also have a lot of key information and involvement here.) I would have kept the strip of course as another hub on the Citadel, but I would have ditched the party for more individual interaction among the old crew and romances. As it is, I usually wait until after Rannoch to start the DLC (so that I can have the full team for the clone plot), and after Horizon so that I can have Miranda (my Shepard's Love Interest) involved in the rest of the DLC.

As it is, the game and the DLC's are too self-contained from each other to make much narrative sense.

Lastly, there is of course the Extended Cut. It works fine, but I think it could have done more to show the after-effects of the galaxy.

In the order I do the missions however, which is what I digressed on before:

1) From Ashes (after Mars/First Citadel Visit)
2) Start Leviathan (after Coup)
3) Omega (after starting Leviathan)
4) Start 1st Leviathan Mission (after Omega)
5) Start 2nd Leviathan Mission (after 1st)
6) Start Final Leviathan Mission (after 2nd)
7) Citadel Clone Plot (after Rannoch)
8) Citadel Party Plot (after Horizon)
9) Extended Cut