I was really heading down the 575 bare route (at $149) since I have two 5.0 batteries. When the 530 went on sale for $149, I had to compare the value of the two different $149 options. In the end, I traded the additional 45 CFM, shoulder strap and diffuser for a 2.5 battery. This became a fairly easy decision (bought the 530) since my tasks are quite basic (pool deck being the main area I need to address). Here is the bonus: When I brought it home and showed my wife, her reaction was "wow, that is so light I might actually use it myself..."!!!!