I couldn't get either in the library. Found one copy of DB at Borders bookstore. Had to order DR through here. I am hoping it arrives before the weekend.
Most people have told me that DR is the better one particularly when dealing with an MLCer because I believe it has a section on it in there but I got the DB one because I just wanted to be armed with every bit of advice and tool that I could get my hands on. Like every book there is stuff in it that you will use and stuff you won't. I was at the beginning when I bought DB and was desperate for anything that gave me hope.