I purchased an Aquabot Viva pool cleaner this year after using an Arneson Pool Vac for 25 years. The Pool Vac had to be replaced because it could not cope with the anti vortex drain cover that I was required to install when I replaced my liner last year. The Viva is absolutely amazing! It cleans the entire pool as advertised. I run it on the 2.5 hour cycle and my pool is spotless. If it does miss a small spot, I direct it to that spot with the remote control. The transformer- controller is compact and light. sets up in minutes. None of the appurtenances in the pool cause any problems for this unit. It was expensive, but if it lasts, it was well worth it!