Lightweight, good design, easy to use, good suction, several settings. Maneuverability Lightweight and rolls easily. Ease of Maintenance Push button to withdraw cord-no hand winding. Suction Performance I gave this an eight because it might not be the best for lots of carpeting. For my wood, tile floors and area rugs it is great! Versatility Several, on board, easy to switch attachments. Toggle switch for foot to switch from hardwood to carpet. Design Haven't found anything that annoys me. Lightweight is a big plus-no back strain. Little space needed for storage. Durability The canister is mostly plastic but it has done well-no problems as of two years of moderate use.