I was about to order an Aquabot to deal with my fall leaf issues (its really out of control!). However, I found some reviews of their customer service. Specifically that they were masters at the art of not honoring a warranty and would find excuses (like a normal wear and tear exclusion) to get out of warranty repairs.
I have read over and over that ALL robots break down, its just a matter of time. So to me, warranty is big an issue. The reason I was looking at Aquabot in the first place is that they offer 3-4 year warranties on some of their products.
So I would be interested in what your opinions are about the best warrantied cleaners and any stories related to it.