Hi folks. This is my first post here. I just severed ties with my pool guy yesterday after 2.5 yrs. I am going to take care of my pool myself from now on. I want to purchase a robotic cleaner since the live oak shading my pool is always dropping little sticks and leaves and dirt in the pool. Leslie's Pool Supply was touting the Polaris F945 and F955, but then I went on Amazon and saw the Dolphin 99996403-PC Nautilus Plus and the Dolphin Deluxe 4. I want the best machine to clean my irregular shaped pool (like an angular pac-man shape) and the most reliable one. Thoughts?