Man, the sheer chaos potential of Venom bonding with other Marvel heroes never gets old. The absolute best I've read is this 'Venom: Agent of Asgard' series that threads the needle perfectly—Loki and the symbiote, both masters of deception and mischief, forced into a reluctant partnership after the All-Black necrosword saga. It's not just fight scenes (though those are brutal); the author nails the psychological horror of two manipulative entities sharing a mind, each trying to out-scheme the other while faking cooperation. The dialogue is a constant, hilarious power struggle.
For something completely different tone-wise, there's a short but stunning piece where the Venom symbiote latches onto Frank Castle after its separation from Eddie. No quipping, no anti-hero posturing—just relentless, silent tactical horror as the Punisher's war gains a terrifyingly efficient biological weapon. It explores the idea that Frank's singular focus might be the one thing that could temporarily 'calm' the symbiote's hunger, creating a monster more focused and dangerous than either alone. The ending, where Frank willingly lets it go because even he finds their synergy too effective, stuck with me for days.
If you want pure, unadulterated fun, you can't beat the 'What If... Venom Possessed the Iron Man Armor?' arcs. Tony's tech constantly adapting to and trying to purge an invasive alien goo, Jarvis having to negotiate with a second, much hungrier AI in the system—it's a brilliant mashup of body horror and high-tech superheroics. The visual of the Mark L suit forming black tendrils and teeth is just awesome.