I just passed series 7, 55 and 63. I also use dearborn material and I passed first time, the questions in exam are defintely more similar to dearborn than other as I also used other materials e.g. STC.
I have 2 brand new CD series 7 and 63 (duplicated bought by company, as I bought it already before my class), everything still sealed, let me know if u are interested