yes, I used a doula. My birth story is directly below your post. Having her there didn't keep me from getting an epi, and seemed to annoy the nurses - but, I didn't care. She was great for information, helping me through the latter part of my pregnancy, and was comforting during my labor - I would recommend!
I really really wanted to have a doula but it wasn't in my budget. I don't know how much they are in the US. I do recommend having one. They can help both you and dh during the whole labor process and will have your best intentions in mind as far as your birth plan goes.
I've hired a doula for upcoming labor and delivery-she's fabulous! She's a massage doula and she's very knowledgeable. I'm in Houston so if you're near here I can totally give you her info.
Re: Doula