I bought a Roomba when they first came out on the US market and it, sadly, ended up in the graveyard of malfunctioning toys rather quickly. That was a long time ago. iRobot has definitely come a long way since that older model. The 690 may look like previous versions but it performs extremely well.Pros :-Set up was a cinch. Plug in the charging dock, place your tower to block exits, download the app, schedule cleaning times or press the clean button and off it goes.-Handling multiple surfaces is not an issue for this rugged wheeled model. The robot adjusts to carpets and manages to not get tangled up in the fringes of rugs.-A low profile allows it to glide easily under furniture to clean up a lot of things that I simply cannot reach while using my Dyson. Also allows it to retrieve the oddest things you may have thought you had lost. It enterprisingly pushed out dog toys, pens, slippers and a book from the cavern under my couch!- The app is very easy to set up and walks you through every step.-You get to name your Roomba in the app. This is a guaranteed thrill for younger kids :)- Scheduling clean times is easy and works like a charm. Just remember to keep the cleaning area reasonably tangle free.- When Roomba does tangle with a problem, it beeps and lets you know what the issue is, the error number and recommends checking out how to fix it on the app. It also pushes a notice to my phone when it completes a job, is stuck somewhere or had an error. It tangled with a ball of yarn under the cavernous couch during its first run and the wheels got tangled up pretty well. It was very easy to fix the problem and get it moving again.-The manual is well laid out with pictures to help you understand how to clean, troubleshoot and set up your Roomba.Cons :- The video advertising Roomba may be a bit misleading in how easily it glides around obstructions. My 690 does learn some things during each run but first it whacks into things pretty hard. Later during the cleaning process it slows down when approaching some of the previously whacked furniture but it merrily bludgeons others. If you have a room full of beloved antiques you may want to consider that. It does have a soft bumper to prevent damage but wear and tear on wood finishes is probably something to consider.- You do need to empty the dust bin after each use and clean the filter fairly regularly.- Roomba recommends replacing the filter every 2 months, replacing brushes and Front Caster Wheel every year. I am not a fan of constantly needing replacement parts for devices.- Sometimes docking is an issue with my Roomba but I think that is because I don't have a wall space with 2 feet on either side of the charging dock. It does dock eventually but it makes several passes and attempts before it does.- You only get one tower in the box. This allows you to block off one doorway or open space under 10 feet long or a curved zone like dog bowls. If you want Roomba to go between rooms and clean a larger area then you do need to buy another tower. A two pack sells for around $80 at the time of writing this review.I have Roomba set up to clean the living room in my home. It is an area that is off limits to my three shedding dogs since dog hair has been death to any device with recessed wheels. It is scheduled to clean every second day in the morning and cleans the room before the family is awake. It takes about 40 minutes to clean the space but it does a surprisingly good job. It saves me quite a bit of time since it is a fairly large room with spaces under furniture that need to be cleaned. I have also noticed a reduction in dust in that room this past week. I left a some paper clippings on different places on the floor to see how thoroughly it would clean the space and it got every single one. While the route it chooses may seem counter intuitive to how we vacuum it obviously manages to cover every available inch.Now, of course, I am wondering if a floor washing robot might not be a great companion for my lonely Roomba. :) Highly recommended.