I know everyone here loves their robot but I am curious as to the longevity and overall cost of ownership of a robot cleaner. My Polaris 280 has served me faithfully for 9 years. It stays in the pool 24x7x365. It is only removed to swim. Given that, it is giving me issues. at the very least it needs to be rebuilt but the cost of a full rebuild kit and a replacement hose adds up to nearly the cost of replacing it. I also read the average life of the pump is 10 years which means it will need replacing soon. How long has your robot lasted without needing extensive repairs or replacement?