I was going to give this vacuum cleaner five stars because it's really fun to use, but there were a few things that kept me going. Below I've looked at some of the pros and cons of each of these items. Battery: A. (Negative battery comments) It's incredibly frustrating that Dyson doesn't listen to its customers. We've been demanding removable dual batteries for years. At this point I'm wondering if there are any design/technical concerns about the wear and tear on a vacuum cleaner if it runs continuously for too long. Dyson should move to removable batteries if they really want these devices to replace corded vacuums. (Positive Battery Feedback) We were able to basically clean our entire 1,600 square foot house on a single battery charge. It all depends on what you're doing. Most people say low settings are useless, but my wife and I disagree. On our parquet floors, when using the soft roller cleaner, the low level cleans everything we need. If we hit a stubborn area, we would quickly hit it in the middle. In our carpeted and carpeted bedrooms we would use a carpet head and alternate between low and medium depending on the area/thickness of the carpet. We vacuumed a lot of hardwood, some tile, three carpeted bedrooms, a sofa, and we still had some battery left. I put on a brush and spent some time cleaning the baseboards. I probably finished half of our baseboards before my battery died. The battery life depends entirely on the settings. YOU DON'T NEED HIGH SETTINGS FOR EVERYTHING. In fact, we hardly ever used high settings and everything came out very clean for us. We have filled the canister several times so I know it has been cleaned well. My advice is to use a low setting on hard surfaces and temporarily switch to medium for tricky spots instead of using the default medium. Of course, this depends on how long you need the vacuum for. Some rugs may call for a medium size, but for our carpeted downstairs bedrooms and rugs it was overkill. Also, when considering cleaning time, remember that you should be vacuuming a lot faster, usually without lugging around a cord. Button: As you probably know, the vacuum cleaner cannot be blocked. The button must be pressed and held to start the vacuum cleaner. This doesn't bother me as much as I thought because I feel like it can save me a lot of battery life. The button is very light for me and in terms of ergonomics it doesn't bother me. However, my wife has smaller hands and she said it bothered her after a while and caused some discomfort. I would like to see a button that can be unlocked or locked. IF YOU GIVED US DOUBLE BATTERIES, RUNTIME WOULD BE LESS A PROBLEM AND THE NON-LOCK BUTTON WAS NO LONGER REQUIRED.3. Price: THIS IS A FUCKING VACUUM. Sorry, but $700 is just absolutely absurd. I'm still a bit disappointed in myself for spending so much money on this, but gosh it's really nice. I love the vacuum cleaner but for this price it should solve all the little problems. Unless Dyson makes the switch to Dual Battery I will refuse to ever buy any of their products again. I went with it this time because it seems to work much better than Shark, but if they continue to ignore their customers' concerns, I'm going astray. You're not Apple, so stop trying to be Apple. Listen to your customers.