I have much the same question. I too am just starting out. I have been going with flyers that I put near or on the mailbox (I Never open a mailbox.) It seems to me that door hangers are good, But, you've got to walk them, vs. in the paper holder for the mailbox, I can get a couple hundred out in a couple of hours. I'm too soon to give you results, well, I have got to calls off them. I have no website yet.
What has been most successful for you big fellas?