Roborock E5 Robot Vacuum

I just bought the Roborock E4 3 weeks ago. I was very skeptical at first on how a vacuum robot could clean and vacuum the hard floors and carpets in my home. We have 3 rabbits, so it means a lot of small hay left on the floors and carpets and some dry rabbit poops around the litter. That means I have to vacuum 3-4 times a week the whole house and this is time consuming. I first tested the robot downstairs. I was surprised on how it handled the rabbits fur balls. I was watching it go and it really covered the whole floor where it could go and even the edges. I then brought it back upstairs in the kitchen where there were rabbits fur balls, some toast crumbs (from breakfast) and some sand (coming from shoes when going in and out). It was the best time to test it and see if it vacuumed all the small debris. I started it and went downstairs. After 26 min, it was finished as I got the notification. I went upstairs and at my surprise, everything was gone, cleaned. The last test I performed was to put the robot in the rabbits room where there's a carpet. There were a lot of small hay on the carpet and some rabbit poops. This was the ultimate test. After 20 min, the robot was done with the cleaning so I went to look and there were no more poops and just some hay left on the carpet. That's to say that I've got a Shark Rocket vacuum and I have to pass more than once on the carpet so all the hay is vacuum so I can say that the Roborock E4 does a similar job. Looking at the robot, it goes in a Z shape pattern and knows where it's been and where to go. It's not a random pattern like the cheaper robots. Only one concern. When the robot cleans the edges, the side brush speeds up and sometimes, instead of throwing the debris in front of the robot so it can vacuum those debris, it throws the debris too far towards the center of the room. Since the robot starts with the center of the room and finishes with the edges, some debris that were thrown in the middle are not vacuum and since the robot finishes with the edges, it goes back to the charging station after having done the edges, leaving some debris in the center. That's why I'm giving 4 stars instead of 5. In all, I'm very satisfied with that vacuum robot and at this price, it does a good job with its double gyroscope and OpticEye system. *UPDATE* After almost 1 month of use, I'm taking one start down. The robot is very good at cleaning the floors and the carpets. The suction is powerful but there's one thing that could have been done better by the engineers at Roborock (Can't believe that they haven't tried this to realize that). The robot should really start with the edges THEN finish with the center of the room. When the robot vacuums the edges, the side brush starts to spin so fast that all debris, instead of getting thrown in front of the robot, they get thrown so far towards the center of the room. Since the robot finishes with the edges, all those debris stay there, without the robot picking them up. I have to vacuum back those debris with my had vacuum after the robot finishes. It took me 2 weeks to figure that out that if the robot would start with the edges then finish with the center of the room, all debris would be picked up. I guess that the R&D at Roborock still needs to learn few things.