Typically your favorite time period for comics or your favorite comic character lines up with whatever time period it was that you first got into comics. Not surprising, it's an amazing experience in those early days of comicbookdom.
So, do you have a favorite decade for Spider-Man comics that ISN'T the decade you first got into reading spidey comics?
Maybe you started reading in the 80s but you loved the issues from the 60s when you went back to read them. Maybe you love the 2000s even though you've been reading spidey 30 years before that?