I've had robotic cleaners for years. My first was a Dolphin Dynamic which worked for 2 years before giving my trouble. At the time, their service was not good and they eventually replaced it with a new one, which never worked well. They actually told me to attach lead weights to help improve suction...uncovered lead bars in water likely to be corrosive! I gather they've since changed their US distributor.

I replaced it with a Blue Diamond which after 3 years had some troubles, but THEIR service was amazing and I had it back in less than a week! It's been working fine ever since for at least 5 years now, maybe 6.

While I am in the North East, I don't have any overhanging trees, just a line of evergreens my neighbor planted as a boundary between us on the western side of the property--so the wind DOES blow stuff into the pool, and our spring pollen in NJ is VERY heavy (hence all the allergies in this area--if you DON'T have hay fever, you're the exception!).