So my first robot vacuum was an original iRobot Roomba many years ago prior to this auto-dump tech. I loved that thing and it still works to this day, however obviously its nearly daily use maintenance was too much for me to do each time. FFWD to now: I live alone with a boxer dog and am gone to work each day so my home's floor was just too much for me to be able to maintain. I decided to invest in a new tech auto-dump technology robotic vac, which would be perfect. Nutshell: after much research and my great experience with iRobot, I decided to order up their latest and greatest, and at "greatest" cost. Supply chain issues delayed delivery for a month, okay, got that. After a month, emailed company just to simply get an update. Did this four or so times over the following month. I received zero, absolutely zero responses, to my utter surprise. Placed two phone calls in to their customer service, and each time after on hold for 45 minutes, I gave up. I was willing to wait - but.... Their product originated in development from the USA, by higher ed students originally afterall. Wellll, suffice it to say I experienced the outsourcing effects of their company. To cancel, I ended up having to go to the lengths of changing my credit card number, updating auto-charges from other providers on that account and it was THEN that I FINALLY heard back from iRobot. Who would want to invest $1300 in a device with zero company customer service response after 4-6 or so tries? Not me. So saddened to see yet another great company to sail off our lands. So I decided to give Shark a try at half the price-I have some of their appliances which have been great. First delivery didn't go well, and that's because I didn't pay attention to the exact model AND the seller. It arrived, I set it up, and the battery would not take a charge. Turns out it was a "previous" model - obviously had sat on some shelf for who knows how long. Returned, and Amazon covered my back on this. More research showed me that that unit wasn't the current model. I decided to order this one which at this time is the CURRENT model, and sold THROUGH Amazon, fully returnable. I can not say enough about this little critter! It's just amazing! This robot vac has made a huge difference to my home. I don't really understand the other reviews' complaints about it's vacumming "noise" be it while operating or on its base in sucking out the bin. It's absolutely no louder than my wired Dyson unit while "sounding like an airplane taking off," for all of less than 10 seconds. To me, the freegin louder it is, the better it's cleaning out the robot! I launched it without even preemptively vacuuming my home- it worked hard and it took a few good cleaning out's to get it more leveled out and that's on me. I made a few changes to my home physically and reset its map by deleting the map (put my couch up on hockey pucks for access-it's about 3.5" tall). It's now re-learning my home and doing a fantastic job after several runs! I can add "high traffic 'rooms' " or areas layed over the top of overall rooms. Contrary to other reviews I've read, probably earlier ones, you can add rooms and name them to your use- I've overlayed "rooms" over larger "rooms." I love this thing! I can't believe it's only been a month of use - I've used the crap out of this thing. No issues and very adaptable. The only thing I look forward to is to be able to program more than one program. You can currently program one session- per day, per week, every each day of your choice, but of your selection of rooms identified including all of the rooms. Can't do an additional sub program of, say, "high traffic areas," which I've added as additional "rooms." I've read that is coming in future software updates. iOS WiFi connectivity is great. Map views when swiping give you more than one historical map of effected coverage. At half the price, "customer service" response remains to be seen (I've not had to), I would recommend this unit. Just make sure you look at current models, and not the older very similar looking models. As with any robotic vac, I'd recommend a home, or shop-use air compressor with regulated output to soften as needed for blowing out all as needed. I also found some great video reviews online that taught me a lot about this model line- very similar responses. By design, one can tell older vs newer units simply by how its dump cannister is designed. The map image I am attaching is one of its first runs of learning, and you can see it did a really good job of coverage for its first attempt. Smaller home in my case but numerous areas-after which I edited rooms, areas and overlayed high traffic areas as additional rooms for double-cleaning. It's been great once my home floor condistions leveled out and the robot can easily cover all areas. Not hard at all- give it a whirl! Hope this helps some. r-