This 14 lb. Shark Navigator Professionial Liftaway http://amzn.to/1QdyIU50 never loses suction. The upright vacuum features a unique detachable and portable canister that lifts away for effortless cleaning in and around the home. The extra large capacity dustup and Anti-Allergen Complete Seal Technology traps over 99.99% of dust and allergens inside the vacuum. The unique and innovative Dust-Away bare floor attachment with 1 reusable microfiber pad makes everyday cleaning on bare floors quick and easy. Swivel steering provides complete control to maneuver in and around obstacles and furniture and the motorized brushroll can be turned on or off, providing superior performance on both carpets and bare floors. Premium pet power brush, dusting brush, and crevice tool provides versatile cleaning throughout the home. An extra long 30 foot long power cord provides maximum range for cleaning large spaces quickly and easily. You can buy about 3 Lift Away Pros for the cost of one upright Dyson. Cleaning performance is comparable (I had 3 Dysons). If you have never used a vacuum with suction this good, you may be surprised how much dirt comes out of your carpet. Assembly is stupid easy. The Navigator Pro also has a HEPA filter.