We have a 280 in the pool now and it seems like I break an axle every 6 months. It tends to get stuck at times as we'll. it's 6 years old now and I am considering replacing it with a dolphin deluxe 3 or a dolphin nautilus. I know the dolphins will clean better but are they worth the hustle to have to leaf rake the oak leaves in the fall first? Are the robots worth the money, considering they need replacing every 4-6 years? I don't think I put $100 into the Polaris every year to average the cost. Just looking for some additional thought. Thanks