Not so much zombie comics but, I do have an extensive collection from the 80's and 90's. I was never really into marvel or dc. I was an indie comic supporter. Used to do a lot of shows and spent a buttload of money on action figures and model kits. Actually have a storage unit full waiting for the economy to turn. cheers!
The walking dead is great. I also love the Marvel Zombies, some amazing art in there and just the concept of only super heros turning is awesome because they all keep their powers, and they kill almost everyone in the world in like 3 days.