I'm pretty strictly a DC man myself, though I dabble in the Marvel Ultimate Universe. (Though that may change as I found Ultimatum to be VERY disappointing.)
If I can try to summon them up from memory, the books I currently read every month are:
Green Lantern Corps
Green Lantern: Emerald Warriors
The Secret Six
Birds Of Prey
I think that's it. GL is certainly my favorite character, but my favorite books to read are Secret Six and Birds Of Prey. Gail Simone is currently putting out books that I'm enjoying more then Geoff Johns, which is saying a ton in my book.
So what comics are you reading?