Okay, I have put this off as long as I can. My PoolVac Ultra is about dead and I have narrowed my choices to these two. I am leaning toward the MX8 because it looks like the more effective cleaner. Just watching the You Tube videos it picks up everything in its path where as the PooCleaner seemed to blow stuff around. The MX8 is advertised to climb/clean the walls where as the Pool Cleaner is not. The MX8 has a latched door vs having to remove 3 screws to clean out debris causing a jam. Finally, a set of treads for the MX8 are $14.00 vs $45.00 for tires (2 wheel model) for the Pool Cleaner. Other parts for the MX8 seem cheaper overall also. I realize the Pool Cleaner has been around longer and there is the unknown factor about the MX8. Any opinions,experiences would really be appreciated!!!