Since we bought this in late November, which I suggest getting since it was newely half off its retail price of 600 (gotta love black Friday), I have only had to get out the old vacuum once. I was worried that we would have to get it out more than that to get under our cabinets in the kitchen, but that is luckily not a problem. If I see something under there now I just push it to the middle of the floor if I know shark is going to clean that day.So here we go...Pros:-it literally cleans about 95% of your floors. Hair is not a problem, tangling on the roller is not a problem, larger debris is generally not a problem (I had some things here and there get missed the first go around, but I mostly see that it has problems on carpets, which we have mostly hardwood floors so not a big deal).-it mapped out our first floor, which is sizeable, in about 2 go cleanings. I was worried about this as a large amount of reviews stated that it took 30 or more cleanings to map their house out and it still didn't map it correctly. The one thing I noticed about these reviews is that they are mostly from from a year ago, so I'm assuming that there has been a software update since then to address this issue. It was super efficient at mapping.- I see this as a pro, but some might not, is that it teaches you to adjust your cleanliness behaviors. You need to keep the floors free of obstacles (as much as possible) in order for this robot to do its job, which means moving your shoes, picking up toys, moving chairs, etc. It was good for my wife and i to adapt better habits anyway and this was a good way to Kickstart that for our household.- if you have allergies, this thing picks up a ton of dust. Since we don't have a pet (yet) it mostly picks up some food, hair and dust on the floor. Man does it help. My allergies have been much better over the past 2 months.- some people gave the app negative reviews, but I found it helpful overall. It is simple, easy and quick to make adjustments on.-you really don't have to empty this but once a month. And, honestly, I could get away with maybe once every 2 months instead. Don't forget to do a monthly maintenance check and clean the filter, but this is a 5 minute routine once a month. Much easier than busting out the bulky vacuum all the time.CONS-speaking of the app, it needs a no go zone feature. The magnet strips, while great, don't effectively help in managing the bots path all the time. Make sure to tape it or use 3m sticky stuff to keep it on the floor otherwise your bot will try to suck it up and take it for a ride with it. The no go zone feature would be helpful for wire areas, furniture, or kid play areas. I hear it is supposed to come along sometime in the future, hopefully soon.-carpet cleaning is a little bit of an issue. We have a giant area rug in our living room and it sometimes has issues with picking up stuff. Luckily, the bot does 2 or 3 sweeps, which most times gets the debris or fuzzies on our carpet, but not all the time. This is indicated on YouTube reviews that I watched before I purchased this, so I knew what to expect.-it is slightly noisy and takes a while to clean. I advise to make the schedule while you are not home, because it can change your daily routine pattern. Generally, it takes about an hour and a half to clean our 600 square foot first floor. I keep it on normal mode, but there is a higher power suction mode that is louder. So get ready to turn the volume up on your TV. I did hear from a roomba user though that this bot is quieter, so I guess it's subjective.-this is more if a personal gripe, it might not be a big deal for you, but I was hoping to have a meet the Jetsons vibe when I connected it to my alexa. I wanted to say "alexa, clean the kitchen" and it do just that. Unfortunately, it doesn't do different room commands, it just does its normal full routine. You can do this through the shark app, which is simple and easy enough. So designate room names and tell it to clean just that room. Still, if you have a kitchen mess and you want to use verbal commands through alexa skills to do something while you are continuing chores or cooking, it would be a nice touch if it did it. Oh well, that's just me.Overall a great purchase. Currently, I got mine for roughly 315 and I am doing monthly payments with Amazon, which I love this feature of Amazon's payments. I pay it off in March in monthly installments of 64 bucks. It is worth the money compared to those roombas that cause double or triple the shark bot. I did a ton of research on different vacuums and this one is in the top 5 (as of right now). I highly recommend this to anyone with similar lay out as us (mostly hard wood floors with area rugs). I found the cons to be just nit picking at its performance, and overall it makes our life 80x easier. I give it a 4.5 out 5 for my personal home and I hope this review was helpful.1 year update:Dog hair: Still going strong and still highly recommend for those with mostly hard wood floors or linoleum. In fact, I recommended it to my mom and dad and now they have one and love it. We did finally get to test it with some serious dog hair. We had an Australian Shepard (which has super thick and clingy fur) and another dog that visited for several days. Both are extremely active and were all over our floors and our one carpet area. They left a ton of fur and it did take 3 or 4 cleanings to get up about 80% of the hair. Whatever was left over was bunched up on the carpet and was easily removable thanks to shark. Just be prepared to wait a few days for the fur to be cleaned up in the carpet. If it's hardwood then it is cleaned up instantly.Hair and roller blade: I have not had any issues with the roller blades and hair tangling. I had to untangle some hair that rolled to the center twice. It is an easy fix. Take scissors and a quick snip and boom solved the problem. The big thing is that it doesn't hinder the cleaning ability of the vacuum.Parts: I haven't had to replace any of the parts yet on it. Just keep up with monthly maintenance and it will hold up. Clean the filters and the dust cup monthly and it will run smoothly. The battery life is still the same too. No issues with battery degradation.Errors and software stuff: so the errors are minor with this robot. It is the occasional bumper is stuck and that the dust cup needs to be emptied, which is nice if you forget to keep up with maintenance. The only issue I have with the software is that it used to be able to clean specific rooms when I originally got it, but now it doesn't allow me to do that at all. It's a bummer since sometimes I still stuff in the kitchen and I just want it to do that room, not an entire cleaning again. Also, and this is a small gripe, but I wish that I could have the robot automatically go to max suction mode every cleaning. Instead, I have to go to my shark app on my phone and change it from normal mode (which is its default cleaning mode) to max.Overall, I would still say this is a 4.5 out of 5. Minor issues, but still totally worth it.