Joe, the RDM must shoot the water at a more downward angle on at least one water slot in order to clean at the highest level.
When comparing the three Rotary machines, I would rate them as so, with scores (100 being highest) in parenthesis;
Handling - 1. RV360 (100) 2. RDM (93) 3. RX20 (75)
Weight - 1. RV360 (100) 2. RDM (98) 3. RX20 (65)
Cleaning ability - 1. RDM (100), RV360 (95) 3. RX20 (78-HE version, 90-5 jet version)
Water Recovery - 1. RDM (100) 2. RV360 (92) 3. RX20 (85)
Durability - 1. RX20 (100) 2. RDM (85) 3. RV360 (80)
Maintenance - 1. RX20 (100) 2. RV360 (95) 3. RDM (70)
Ability to access more areas - 1. RDM (100) 2. RV360 (90) 3. RX20 (75)
Price/Value - 1. RV360 (100) 2. RDM (discontinued) 3. RX20 (65)
When comparing the three Rotary machines, I would rate them as so, with scores (100 being highest) in parenthesis;
Handling - 1. RV360 (100) 2. RDM (93) 3. RX20 (75)
Weight - 1. RV360 (100) 2. RDM (98) 3. RX20 (65)
Cleaning ability - 1. RDM (100), RV360 (95) 3. RX20 (78-HE version, 90-5 jet version)
Water Recovery - 1. RDM (100) 2. RV360 (92) 3. RX20 (85)
Durability - 1. RX20 (100) 2. RDM (85) 3. RV360 (80)
Maintenance - 1. RX20 (100) 2. RV360 (95) 3. RDM (70)
Ability to access more areas - 1. RDM (100) 2. RV360 (90) 3. RX20 (75)
Price/Value - 1. RV360 (100) 2. RDM (discontinued) 3. RX20 (65)