Buy iRobot Roomba 560 or 630? Which is better?

Here are some difference between iRobot Roomba 560 and 630.

Roomba 560 VS. 630
images from manufacturer

*Scheduling Functionality:
The 560 features on-board scheduling that allows you to set it to vacuum whenever you want it to run. The 630 doesn’t feature this.

*Lighthouses:
The iRobot Roomba 560 supports the lighthouses while the 630 doesn’t.

*Virtual Wall:
The Roomba 560 comes with 2 Virtual Walls, while the 630 only has one.

*Weight: The 560 is a bit heavier.
The Roomba 560 weighs 8.3 pounds while the 630 wieghs 7.9 pounds.

*AeroVac Technology and Brush:
The 630 features AeroVac Technology and an improved brush design to lessen hair tangled on brushes. However, it seems there are upgrade kits for the 560.

Do you know more difference between Roomba 630 and 560, please share it below, thank you.