BTW, this is my first Shark, so I won't be comparing it to other Sharks, even though it's a new model (NV360, blue, no "k"). We have a Hoover Windtunnel T-series "PAWS" now 3 years old. I have looked at other vacuums including Dyson and Hoovers with features like this Shark.
Cleaning with the floor head: Basic operation is job 1. I am impressed. While the cleaning width is 11" rather than 12" or 13", the ability to swivel the head and the on/off motor drive for the beater brush, gave it superior cleaning and especially edge cleaning. The lighter weight makes it seem easier, even though there will be a few more strokes in open areas due to the slightly narrower head. Note that the cleaning head floats over the carpet or surface, so there is no adjustment for carpet thickness. It handled our carpet well, and the bare floors much better than the previous vacuum. There was one floor mat that sealed to the vacuum resulting in difficult movement. There is a partial suction release ring on the handle that is supposed to help with this by providing another path for some air. The motor drive also helps by moving the head over the carpet in a forward motion. There is a green indicator when the brush motor is turned on, and it turns red if the brush is not turning. To go from upright to vacuuming position, you place one foot on the floor head and lean back the handle. There is a noticeable release as it clicks out of the upright position. I am now sold on the benefits of a swivel connector, which means that you can easily steer the floor head by angling the handle as you push or pull. This makes the vacuum feel much easier to control and less tiring to run.
Cleaning the vacuum: This is a hepa-filtered vacuum, which unlike old school models, runs the air through most of the filters before the vacuum motor, with only the hepa filter placed after the motor. My lady found the canister easy to empty and clean and very securely mounted, ensuring there is no leakage of air in the vacuum path. All the filters can be rinsed with water, prolonging their life. The instructions call for regular emptying of the removable canister, rinsing and drying the foam and fiber filters every 3 months, and rinsing and drying the hepa filter every 2 years. This is a less frequent interval than the hoover windtunnel.
Construction was solid and impressive. As a geek, I loved the modular construction with secure, easy to fasten connections and clearly marked levers to fasten and unfasten. There is no cord rewind, which is good from my point of view, as this is a wear item over the years. Our prior vacuum now will not reliably stay out. I think most people have the opposite problem of tangling and jams, but we are very careful with our cords. There is also no light on the floor. I usually vacuum with the lights on anyway.
Weight: This is a lighter vacuum, even fully assembled, much less in the optional configurations for hand use, due to the lighter floor head in part, but the air flow through the vacuum is very strong. I like it.
Assembly and options: I have never assembled a vacuum without any tools at all. I actually didn't even have to cut the box open. The pieces are modular, with the floor head securely clicking into the canister with a clearly marked red lever, the handle serving as an extension hose, with clear red levers that securely click, so you can actually remove the floor head and the handle and use the canister as a lightweight (just as powerful) corded vacuum that you can carry, place on the stairs or a ladder, etc. You can also fully disconnect the floor head when you are using the handheld attachments with the vacuum in vertical standing position so no suction is lost. This is part of the design. Attachments are not show in the picture, but they include a 6" "pet brush" that has a swivel in the hose and a suction-powered (not motor driven) beater brush. I think it is much better than the Hoover pet brush we also have. The front and back sides have inserts like those used to remove lint from clothes and this could also be used as an effective lint remover as well as curtain and upholstery cleaner. On softer fabrics, you may need to use the optional air intake ring on the handle to lower suction. It worked great at full suction on the carpeted stairs with the canister detached from the floor head for easy lifting. My lady didn't even set it down, just carrying it as she progressed up the stairs. Other attachments include the pointed nozzle and the small nozzle with brushes around it, as well as one that is new to me--a long, almost flat extendable tube that allows you to vacuum under couches, stoves, refrigerators, and the like, as well as along walls behind furniture without moving the furniture. This does not store on the vacuum itself, nor does the pet brush head. I have attached pictures since these are not in the item photo (currently).
Summary: On sale or off, the price for this vacuum was roughly 50% more than the "hundred dollar models" that will still do the job. Given the number of hours spent vacuuming and our need to replace one of those after three years of careful usage, I am feeling very five-stars about this vacuum, and I understand now why Shark has such positive reviews. I could also note that the BB sales person uses this one to clean the store every night, and that there was a sign posted by the store use Shark (last years model) not to use the dysons from the display stock because they had broken. That is not my story to tell....