Nick Collins, MS, RN, CNS
As far as salary is concerned, I don't think there is a difference.
However, there is a hiring preference for BSNs. If you are an ADN, most employers will ask you to agree to obtain your BSN within a certain timeframe; usually around 5 years. Sometimes the employer will pay for part of your BSN tuition if you work full time.
If you plan on getting an ADN, try to work for work for a healthcare system before you graduate. It is hard to get hired with just an ADN and no personal contacts.