I have the Barracuda G4. I am very happy with the way that it cleans the pool walls and floors. I had to do some fine tuning with the hose lengths and adjusting the valves between the skimmer and dedicated vac line but once I did, it works like a champ and goes right up to the tile line. Some have a hard time getting it to climb the walls but where my walls meet the floor there is a smooth radius that might be key to allowing it to climb.