Too many for a poll so just pick from the following list:
Simulator
Thick as Thieves
The Hunt
Venom Bomb
Meet Rocket and Groot
Unstable ISO 8
Enemy of the State
Heart of Darkness
Iso 8 Brotherhood
Prodigal Sun
The Hulk
The Gauntlet
Deadpool vs MPQ
Honor Among Thieves
Not a complete list I don’t think, so if you can think of anymore you can vote for them.
My favorite is Heart of Darkness as it only has 1 day of heroes and 2 days of goons
My least favorite is Simulator
The Gauntlet(old style) is favorite..love Simulator too.
Least favs are Venom Bomb and Honor Among Thieves as the goons are too repetitive and slow.
Favorite: Deadpool vs MPQ.
Least Favorite: Prodigal Sun. Man do I hate that event holy shit.
I always liked Prodigal Sun, as it’s nice to see the bad guys win one every now and then, and the dialog wasn’t bad. Same for Deadpool vs. MPQ (funny the first time through, at least to me), and same for Meet Rocket & Groot. My least favorite is Gauntlet, because there was no dialog, too much work for meager rewards, and not even any fun fight descriptions.
My favourite is anyone that doesn’t have tile movers or minimal amounts of them. So Strange Sights, Rocket and Groot etc.
I hate the Simulator and Gauntlet.
Most liked? Simulator, Prodigal Sun and Strange for me. First two because they offer something different to Dark Avengers. Last one because of all the sub event rewards!
Most hated? The Hunt (Florida, man. Just Florida…), Unstable ISO (Lots of Dark Avengers) and The Hulk (ALL OF THE DARK AVENGERS)
Any event with a super boosted Juggernaught.
For the writing (yes, I read the dialog) my favorites are Webbed Wonder and Deadpool vs. MPQ.
For the gameplay Simulator and Gauntlet are my favorites. The teams you fight are interesting, and each time they run the event the teams are different so the events don’t get stale. Honorable mention to Strange Sights for the Kaecillius battle.
For rewards I think Strange Sights is the best, though I also love the big ISO nodes in Simulator and ISO-8 Brotherhood (isn’t that the 7 day one about Magneto? I get it and Unstable ISO mixed up).
The older ones are my least favorite. I’ve done them so many times and the nodes are less interesting since they were made with a much smaller pool of enemies to choose from.
Least favorite is Prodigal Sun. Favorite is Strange Sights.
Favorite: Webbed Wonder for the story or Strange Sights for the format
Least Favorite: The Hunt or The Hulk
I prefer any event with wave nodes that give event tokens.
Least favorite is probably venom bomb.
But, who am I kidding, I grind it out in any event to get the CP
Either Strange Sights or Webbed Wonder for fave. Variety and good dialogue. Prodigal Sun is my least liked. I play this to be the hero, not the villain.
Favourites: Strange Sights, EoTS, Simulator, Gauntlet
Least favourite: Heroics, DA heavy events
Boss story events are my true favourites though.
Favourite, strange sights
least favourite: venom bomb and deadpool v MPQ, I wouldn’t have a problem with the latter only because they repeat it so much along with meet rocket and Groot with a 48 hour match
I really don’t like 48hr events
Favorite: Enemy of the state
Least favorite: This x-men simulator is making want to try to put my first through the wall. I went down 2 shield levels lower than I normally do and spending on health packs like crazy. The AI is being so god damn cheap in everything today. I am feeling back because my neighbors can probably hear me screaming “come on!” over and over by the 30th straight 300+ cascade into them firing every power.
Of course it makes sure I get to the big iso match with no time to actually fight it. I think I am going to go put my fist through the wall out of frustration of wasting my time on this garbage
Cant say I really have a favourite, probably ones with lots of goon nodes as they are quicker to clear.
Least favourite is easy. The Hunt. I moan about it a lot! I get that this game is repetitive, I have no issue with that. However, what I do have an issue with, is fighting the same combos of enemies sometimes 2 or 3 times each sub, to then move onto the next sub, and end up fighting the same combos of enemies again. Most usually consist of Bullseye too to drag the repetitive fights out even longer. That event is one long depression that desperately needs mixing up a bit.
Haha, feel you mate.
Rogue is a damn beast and 3* gambit is a monster aswell. I forgot and had rogue in front. Carols black did 4500 dmg lol. Her tanking 20% dmg for each ally. And preventing your most powerful colour from doing dmg and gaining ap is just disgraceful, in a great way of course (if i had her anyway 
Favourite:
Least favourite:
With the new 5* essential my favorites are any that require one of my champ 5s or high level 5s. Least favorite are any that require my low level 5s. I don’t really care who is on the other team, I play Story mode for the resources anyway. Tinykitting about them just makes them worse…
My absolute least favorite and despised event is the DDQ. Hear me out. The burrito and the right side of the event are great. Really appreciated rewards especially the 4* Crash when I can complete it. Super fast and easy. The left side of the event is dog shit. I have 37 champed 4s and most of my daily frustration with this game comes from the retarded scaling on 2 nodes and the fact that I still have to keep a roster spot for a 1* . A couple days ago I nearly wiped on the 1000 Iso node and was faced with either using 3 health packs or waiting 4 hours for regeneration to do the wave node. Its just stupid. My second least favorite is The Hunt. Miserable slog through miserable over powered Dark Avengers. My favorites are Enemy of The State, Gauntlet and Simulator. Honestly I enjoy anything that is lite on Dark Avengers. They are so stale and awful to play against.