I have had a Polaris 180 for 17 years and it has served me well. I replaced the pressure pump a few years back. It looks as if I may be replacing the Polaris 180 with the newer Polaris 280. My question is, will I also have to change out the pressure pump or will the old pump provide what is needed for the newer Polaris 280 model? As an aside, I would consider a different pool cleaner if it provided better value and capabilities versus the Polaris 280. I just have more experience with the Polaris product. Thanks in advance for any help provided. Jim