I ordered the D5 connected after watching probably 50 online video reviews and reading a lot of website information on the latest robot vacuum tech available. I opted for the Neato line because of the advanced room mapping and methodical cleaning that is promised. I wanted the D5 because it offers the best cleaning power and filtration for pet hair and allergens without going for the top of the line unit. So far, good choice.I want to give a quick summary of my situation.I have two large dogs. 1 Great Dane and 1 Pointer mix. The both shed quite a bit and it has been a hassle to say the least to keep up with vacuuming the dog hair. I could literally vacuum in the morning and it would need another go over later in the afternoon. I have a Dyson D17-Animal Upright so getting the hair up is not a problem... it's having to lug out the upright constantly that's an issue. After a recent couple of large gatherings at our house, I told my wife I plan to purchase the robo-vac to help keep up with the dog hair.So, the unit arrived (3 days earlier than the estimated delivery... Woo-Hoo!!) I un-boxed it and quickly got it setup on our wifi Network (downloading the app on the phone this only takes a few minutes to be up and running). I immediately noticed that the bot had about 76% charge already but I let it top off for about 1/2 hour before I ran it the first time. Now... I have to say, I had vacuumed in the main area of my house... lightly... with my Dyson earlier in the evening as I had some people over to watch a movie.After it had charged about 30 minutes, I decided to let it go on a test run to see how it worked. Well, as I have said, I watched a lot of video reviews and comparisons of these units so I was basically aware of what to expect... but... you just can't appreciate how intelligent this thing seems to be until you actually watch it in action. I'm a computer programmer and I have done board level development and some robotic programming... even in industrial... so I can appreciate the nuances that go into an AI algorithm. This is very impressive. I have a very odd shaped living area to begin with, but it is really cluttered with a lot of furniture, dog bowls, tv table stand... etc... We didn't really do a lot of setting up our house for the bot before running it the first time. I just wanted to see how it would handle things as they were. Well, it quickly scanned our family room and then began edge cleaning and working in sections cleaning one area at a time until it cleaned: Family Room, Dining Room, Kitchen, Living Room, Main Bathroom and a small hallway. It was really interesting to watch some of the subtleties of how it covered the floor (it would literally skip a small spot which at first a thought was an issue... but it would return to that one spot later and clean it after completing some other task. It knew it missed it... but had to come back to it).When the cleaning was done and it returned to the docking station to charge, I removed the bin to see what it manged to pick up. I was absolutely shocked... the bin was stuffed completely full of dog hair, dust, dirt and other debris. I couldn't believe my eyes. Where the heck did it find all this as I had just done a light vacuuming earlier (see pics). I started walking the area checking to see if it had missed anything major and was again stunned to see how well it cleaned. I should also mention, we have hard floors throughout (tile in the main living area and laminate in the master bedroom) so I didn't test it on carpet. Other than a couple of spots where it wasn't able to get to the dirt because we hadn't moved the furniture to optimize it's cleaning... it didn't miss anything. I also want to mention, it cleaned 570 square feet in about 56 minutes. When it started the cleaning, it was at about 85% charge. When it finished, it was at 52% charge. The battery life is very impressive.My son took it into his room the next day and did a 1 room cleaning. He was shocked how much dirt and hair it picked up from his room. I guess we don't realize how dirty our floors get until we see it.Couple of things to note about the setup and unboxing:1 - The wifi setup is a little confusing as the app automatically connects to the robot then asks for YOUR wifi. Initially, I was confused and thought it was asking my to find the robot to connect to but couldn't (the online videos show it doing that way). They must have changed this in a firmware update.2 - All of the online information says you must use the included USBTG (usb tether) included with the unit to upgrade the firmware. This was not the case. Apparently, the latest release of firmware is now OTA (over the air) capable so the robot upgraded right over the app / wifi. Nice.3 - This unit does not include any spare filters or brushes (side brush). They are on replacement reminders in the app, so you'll likely want to order some replacements before too long.I currently have this unit scheduled to clean my main living area every day except Sunday at around 2:30 PM. We will have to see how it holds up from a maintenance standpoint and I will likely update my review with more information in a couple of months with any maintenance tips / concerns. I also should mention, I was an early adopter in Robot Vacuum technology. My first unit was one of the early Roomba vacs about 9 years ago. At that time, it was more of a gimmicky... nice to have techie thing that wasn't really practical. With the new technology and efficiency of what's available today... these are viable appliances in your house. Won't replace the manual vacuum. But I won't be needing to pull it out more than once a week and probably less than that.12/14/17 Update - This robot has been cleaning my main part of the house at least 5 times a week since I got it. Other than a few minor glitches (getting stuck a few times) it has kept our house so much cleaner than it used to be... with the two big dogs. But... the main reason I wanted to post this update. I just received a notification today... the D3 and D5 (which I have) just got a firmware update... they now support the area cleaned map like the Botvac Connected (shows an actual map of the area that was cleaned that the robot detected after the job is done). It doesn't show a live update like the Xiaomi does, but this is an awesome update!! :) very cool. This way, I can see if the robot was seeing anything weird when it cleaned. Image of the first cleaning map is included (see my pics below).12/23/2018 Update - After less than 1 year, sadly my Botvac D5 started acting oddly and would navigate erratically and report bizarre cleaning maps. It would get lost in the middle of the room and run out of battery without returning to recharge. I contacted support and after about 2 months of back and forth sending the unit in for repair, Neato determined the unit should be replaced and they sent me a new Botvac D6 upgrade. So, in general, I'm still happy with Neato because, although the process was a little frustrating at times, they did support the unit while under warranty (warranty had almost expired). I wasn't thrilled with the repair depot that they instructed me to send the unit to. It's in Texas / US and I looked the location up and it's a 3rd party repair center. They were not very helpful as they didn't package my unit very well when returning it and they never sent me anything regarding what was diagnosed or repaired with the unit. I did inform Neato of this in case they wanted to keep track of how their contracted repair centers are performing. So far, very happy with the D6.