Anti-Venom, as @Bonkidus.Shwonkidus said its not sentient, so I wouldn't have a murderous voice in my head, he also has multiple abilities that other symbiotes don't have, and he is immune to fire and sound.

Anti-Venom or Lasher.

Anti venom 2 Flash Thompson version

My second picks would be Toxin, Agony or Silence, but I have to go with my first pick...

My fav Lasher

The main man himself, Venom

Or main space sludge I suppose

Probably Venom but only because he's considered small and so am I 😂

Anti Venom or Toxin

Venom. I need that tongue.

For real though, I’d pick Anti Venom.

Anti-Venom

I'd go with toxin