the best marvel storyline??

[JewishHobbit]

Hmm,

Marvels
Age of Apocalypse
X-Men's Proteus Saga (just prior to Dark Phoenix Saga)
Spiderman's Child Within arc from Spectacular Spiderman 179-185.
The Clone Saga
Onslaught

And I think Annihilation could potentially join that list.

 

[VenomousToxin]

Relatively new to comics but so far I've enjoyed:

Annihilation
Venom vs Carnage
Heroes Return the Avengers

 

[roach]

Millers: Daredevil
Claremont's first run on X-men
Byrne on FF
Avengers forever
God Loves Man Kills
Lee/Kirby FF
Lee/Ditko/Romita Spider-man