I've mainly been more DC than Marvel but recently started watching Avengers: Earth's Mightest Heroes on Netflix along with several other Marvel animated movies. I really liked it and it reminded me of Justice League. I've always liked DC more because of the TV shows. I don't think I like any of the countless Spider-Man TV shows out there but I did just watch an episode of Ultimate Spider-Man with him and Deadpool. I see why people like Deadpool.
I really liked almost all the characters on the show... except Hank Pym (Antman, Giantman, Yellowjacket). he was just really annoying. I loved Wasp the most but all the Avengers were great. I loved the story because of all the major plots happening. I also loved to see other Marvel characters show up like Spider-Man and Wolverine (side kick of Spider-Man). Luke Cage and Iron Fist were cool as well. Except for The Thing I didn't really care for the Fantasic Four.
I recall liking X-Men Evolution back in the day and decided to rewatch it. I really want to like both DC and Marvel. DC just had way more shows I knew about. I somehow forgot all about Marvel. The shows are on Disney so I'll check them out there. I've never read any of the comics of either so I don't know what goes on there.