I bought a Aquabot Bravo III, two years ago. I wanted to try it for a while before I commented. I have pine and oak trees around the pool. I have to use it every other day. Within 15 minutes, it clears out most major dirt and by the time it turns its self off the pool is always perfect. Never sticks on ladders. I have no complaints at all with this machine. I will buy another when I wear this one out.