Oh man, I hate the polarization between the two.
I love them both.
I hate how Marvel starts a new event two to three times a year and wish that they'd only do that once every two years or so.
I hate the new52 of DC and wish they'd just go back to the comics they had before.
But I refuse to pick a favorite.
Sometimes I want to read one more than the other- for instance I'm feeling really partial to Nightwing comics right now- but I can't say which company is my favorite.
I wish they'd go back to having the occasional crossover like with one of my favorite comics, Batman and Captain America (1996).