I've waited to write this review until we used this robot for a decent amount of time.I can say that it is a real time saver when it comes time to clean the pool. Almost every time I clean my pool it covers nearly every inch of the pool and it cleans very well. There have been a few times when it didn't get the entire pool floor, but it generally does great. I think one of the best things about the robot is that it has a self contained filter basket. So there's no hooking it into your filter. I have many trees around my pool and they drop a good amount of dirt into the pool. Typically I put the robot in the pool every day because there's dirt on the pool floor. All the dirt is captured in the robot's filter basket. This means I need to clean my pool filter much less often. When the robot is done cleaning I take it out of the pool and put it in my shed. Then I clean the filter basket which takes about 30 seconds. All in all I spend maybe 5 minutes a day putting the robot into the pool then taking it out and cleaning the filter basket. I used to spend 30 - 45 minutes every other day with the vacuum that connected to my pool filter via hose.This robot has done and incredible job cleaning my pool and saving me time.So why only 3 stars? Two reasons.1. On the Amazon page for the robot it says quite clearly "The E10 is backed by a 2 year manufacturer's quality warranty protecting your investment." That was one of the main reasons I bought it. When you spend this kind of money you expect a longer warranty. My opinion is the warranty should be at least 3 years but there are few robots, if any, with a warranty that long. However, even though the listing says it has a 2 year warranty, when you get the robot and you look at the warranty card you can see what the warranty really is. The warranty card says 2 years for plastic parts and 1 year for cable, power supply and motor unit. Why not make that clear in the listing?? If you look at one of my images you'll see the actual warranty card statement that I put a red box around. It's highly unlikely a plastic part is going to fail in 2 years. It's way more likely something mechanical or electrical will fail. So they are being very deceptive about the true warranty on the unit. I did buy the extended warranty through Asurion, but I'm not holding out much hope they'll actually be helpful if needed based on reviews I've read about them. Hopefully I never have to find out.2. Customer service appears to be non-existent. When I received my unit the filter basket had a hole in it. I know that sounds bad but it was in a place where it didn't really have a negative affect on the operation. However, being a new unit and being quite expensive I wanted to get the filter basket replaced with one that didn't have a hole in it. I called their support line and got no answer. I then sent an email and got no response to my email. So I'm assuming they don't really have a customer support group. Or if they do then they just don't care about actually helping their customers. I ended up having my wife sew up the hole in the basket. If you look at my other image you can see where she sewed up the hole. Filter works fine, but like I said, this is an expensive item and I should be able to expect quality.I do recommend the robot. Just keep in mind the 2 year warranty is not a complete warranty and good luck with their customer support if you need it.***Update 6-27-2019***After my review went public I the company responded to my comment almost immediately. I emailed them at the email address they gave in the response to my comment. They apologized for the lack of customer support during my initial attempts to reach out to them and they sent me a new filter to replace the one that had damage when I got the product new. So apparently I was just unlucky when I first tried to reach them. Since writing the review my experience with their customer service has been stellar. I still think the warranty statement for the product on Amazon needs to be clarified, but because of the great customer service I finally got I'm not going to remove any points for that. If I could give 4.5 stars I would. But all in all the product works great and customer service took quickly took care of the issue once I was able to reach them.