I've never read any of the comics. Most of my experience with DC is through the TV shows Batman the Brave and the Bold (wasn't much of a fan), Teen Titans Go (that show looks stupid), and Young Justice (now that show, I loved).
I still haven't read any Marvel comics, but I've had much more experience with it - I used to watch The Super Hero Squad Show a few years back, and that show has almost all the Marvel superheroes in it, and it wasn't half bad. Plus, I watched all 17 MCU movies in 11 days a few days ago, so...
Yeah, I'll have to say Marvel, even though I haven't seen much of DC.
Have you read any of the comics? I'm not planning on it - they seem good, but comics aren't my thing, and I'm not a super-superhero fan anyway.