Just curious as to what guilds/Factions people like the best. I personally like the Thieves guild and the Companions.

This isn't only about quests, but assets, what the faction allows you to do. For instance, I like being able to bribe guards out of crimes, and the nightingale armor. What do you think?

I picked "Great Houses." One of the reasons why I like the Great Houses is because there is a bit of consequence attached to our choice. Joining one prevents us from joining the others. If wish there were more of that in the Elder Scrolls games.

Thieves. They suit my characters and have interesting quests.

House Telvanni - thousand year old wizards who live in giant mushrooms

This is a difficult question... And for me it tends to vary hugely with the game. I loved the thieves guild in
Morrowind and Skyrim. Hated it in Oblivion. Bunch of feel-good Robin Hood nonsense... On the other hand, I outright hate the Dark Brotherhood after they turned it into an incredibly lame spooky cult... And the Imperial Cult was so clean and homogenous that all the Divines lost their class...

Eh, I choose none of the above. I like the Daggerfall Era Temple of Dibella the most.

Hard time deciding, went for Thieves Guild. My favourite style tends to be stealth.

Preferred Oblivons over Skyrims. Enjoyed just finding out how to join, thought the Gray Fox was an interesting character. Like aspects of Skyrims, mostly disappointed being forced into Nocturnals plaything.