Why canister? If your home has mostly hard flooring, the canister vacuum is easier to move from room-to-room, and the stretch hose and attachments let you get right up against edges and under tight furniture. Specialty cleaning tools store right on board so you can easily clean stairs, drapes, upholstery, and more.
If you don't want to guess when it's time to change the bag, or pay for replacements, the bagless system lets you throw the dirt away every time you vacuum. A clear, easy-to-clean bottom release cup on most models lets you see what you picked up and then dispose of the dirt quickly and with less mess.