No formal tests have been reported of the 7000, compared to older 9000. Some reviews by experienced robot users posted:
English
http://www.robotreviews.com/chat/viewtopic.php?f=22&t=20033German post #21 at
http://www.roboter-forum.com/showthread.php?18443-Samsung-POWERbot-VR7000-Neu-2017/page2I suspect Samsung does not donate units to reviewers. CNET never tested the 9350 last year.
The detailed specifications at the U.S. website Samsung.com including airwatts appear to show higher fan power and suction in the 7070 vs 7040 and lower end versions.
Data must be interpreted carefully considering whether units have a Max power mode and Quiet power mode besides Normal -- which is adequate.
The battery in the 7000 is the same capacity or more than the larger 9000 units, twice the size of Neato Robotics and similar to the Dyson high suction robot.