What would you say are the best followers in the game? I heard some people praise J'Zargo greatly, but at level 80 he just does nothing to the enemies I face. I had Mjoll on one character as a follower, but at level 55 she did little-to-nothing, too. Even with a Glass Mace that would make Malacath drool with delight...

Serana's pretty good, but I'd prefer a warrior or perhaps an archer...

So what followers do you use that really help you? And should I have different followers depending on my level?

P.S. my Level 81 Imperial is chaotic evil. He was good but the Daedra corrupted him. My Level 40 Dunmer is a good girl, though.

I'm never disappointed with Uthgerd really. Heavy Armour to let her tank and Two-Handed weaponry to let her do damage and stagger.

Kharjo and J'zargo are awesome, especially J'zargo, who's level isn't capped.

The essential ones. Annekke never let me down.

Bu J'zargo was using a shock spell on a Draugr Scourge and only took around 10% of its health off in about 5/10 seconds. :/

Brelyna Maryon... powerful mage, and an actual personality to boot, unlike some other followers who are a bit... bland. *Glares in the general direction of Lydia*.

I would also say Vigilance, but he's not really a follower - well, he is an animal follower for sure, but... does he count? He is quite sturdy though, and can actually put up a pretty good fight.

Jenassa, she's dark and creepy, and pretty competent (although I do use AFT, so she levels with me, and doesn't do some of the more doofy things followers do in vanilla (such as walking right into blatantly obvious traps).