Most and Least Favorite Companions?

This is a bit harder to answer when your memories - and feelings- aren't fresh anymore, but let's go.

DAO:
Favorite: Morrigan, Leliana, Alistair, Shale, Sten
Least: Wynne and Oghren, though I do love them as well


DA2:
Favorite: Isabela, Varric, Fenris, Carver
Least: Merrill


DAI:
Favorite: Solas, Cassandra, Sera, Dorian, Iron Bull, Leliana, Cullen
Least: Cole, Vivienne, Blackwall

I think DAO had the strongest cast. There is no one I particularly hate (even if there are a few grievances) and no one I'm indifferent to.

nice to see I'm not the only one liking Oghren

DAI:

Favorite:

Cassandra- Not only my favorite companion in DAI but quite possibly my favorite companion in BioWare ever...though Garrus is certainly up there...and I just adore the hell out of her. Her faith, her doubt, her mix of feminity and bad assery. Perfection.
Dorian- Man has a great sense of humor and a interesting outlood.
Cullen- Great romance, great tragic backstory, I hated him in the first two games but really came to like him.
Josephine- She is also quite adorbs.

Least favorite: Blackwall- I tried and typically I like this kind of character but he was pretty mean and unlikeable.

DA 2:
Favorite-
Varric- The Storyteller with a sense of humor, was my Hawke's little (big?) brother
Anders- Perfectly tragic character with just the right blend of humor, also kind of a writer and political junkie.
Fenris- That voice and a pretty good character.

Least:
Isabella- Over sexualized, one note.

DAO:

Allistair- Perfect sense of humor, relatable problems.

Least: Oghren- Drunk, unsympathetic, one note, bit weird, bit of a sexualized maniac...when it came to reuniting him with his love I didn't even encourage him to do it.

DAA:

Sigurn- Pure fun.

Best: Anders (simply great, and can be explained in many ways – but as great is this – to be honest as bad as well: it isn't clear, this is intentional or chain of mistakes... or both...).
Least: Vivienne (Her politics, her manners – and I can't agree with people who say, she's incredibly good written. She has moments, but to be honest: she's an anomaly in some aspects, and... mary sue: beautiful, smart, great mage and great alchemist: a scholar, but even the best Gamer in the Grand Game... AS A MAGE! And if the Inquisitor befriends with her: she's the best friend ever! She was painted as the most important mage in Southern-Thedas – but NOWHERE was written, where she was when the rebellion happened... if she cares so much about mages – where she was, when it started? Where she was, when the mages voted? What is her opinion about the Tranquility? Annulment? She loves the Circle – so: she's agree with those... the Circle-system can't be separated from those – the Annulment and Tranquility are the Circle-system. If she's the Divine – she keeps those? She will accept the reversion of the Tranquility? And: she cries a lot that Anders, Fiona and the rebel mages destroyed the great "fashion accessory" status of the mages – but she became a candidate for the Divine's throne... HOW? Many questions – no answers. Vivienne not only unpleasant character – but there are many mistakes about how the character was written.)

DAO
Favourite: Morrigan, Leliana, Zevran, Dog
Least Favourite: Didn't really dislike anyone

DA2
Favourite: Aveline, Isabela, Varric - the only team I could really go with. I didn't like anyone else and really hated Fenris and Anders and their oppression olympics. I don't want to be a traveling therapist. Alos, what a waste of Gideon Emery's talent. Overall the most dire cast of companions.

DAI
Favourite: Vivienne, Cassandra, Dorian
Least Favourite: Blackwall (boredom with a beard), Solas (likes to listen to himself way too much)

Was a bit bored in the heatwave so totalled answers to date

DAO favourite
1) Morrigan (21)
2) Alistair (15)
3) Leliana (14)
Zevran (13), Shale (10), Dog (9), Sten (8), Loghain (4), Oghren (4), Wynee (2)

DAO least favourite
1) Oghren (17)
2) Wynne (7)
3) Sten (6)
Loghain(3), Zevran (3), Alistair (3), Leliana (3), Morrigan (2), Shale (2)

DA2 favourite
1) Varric (17)
2) Izzy (15)
3) Aveline (12)
Fenris (10), Merrill (9), Anders (6), Bethany (5), Carver (3), Seb (1)

DA2 Least favourite
1) Sebastian (18)
2) Anders (14)
3) Fenris(5) / Carver (5)
Izzy(4), Merrill (3), Varric (3), Tallis (2), Aveline (2), Bethany (1)

DAI Favourite
1) Dorian (19)
2) Cassandra (16)
3) Iron Bull (11)
Sera (9), Solas (7), Josey (7), Cullen (5), Blackwall (5), Varric (5), Leliana (5), Vivienne (4), Cole (1)

DAI least Favourite
1)Vivienne (13)
2) Sera (12)
3) Blackwall (11)
Cole (8), Solas (8), Cullen (5), Varric (4), Josey (2), Dorian (2), Cass (2), Bull (1)