Both ADNs and BSNs are eligible to become RNs ( in that respect there is no difference). In many institutions there is a slight education differential with the BSN, meaning that a nurse with a BSN gets a slightly higher salary than a nurse with a ADN. I think there are RN-MSN programs so you don't always need to have a BSN in order to start your Master's (The program may just take longer to complete) Another importance difference is that some hospitals require a minimum education level of a BSN. You can become a great nurse either route you take, but the BSN may open up more options. Hope this helps :)