central vacuums
Central vacuums are awesome. I have 9 units in my apartment and I use them all free standing without pipes. The power is awesome, it will clean better than any portable cleaner, canister, upright or anything else. Nothing even comes close. Since you don't have pipes to restrict the airflow, you get the full power of the machine. Just attach a utility valve to the intake and connect your hose.
Tacony is now selling their simplicity vacuums through on line stores but not Riccar. If you go to the Riccar site they are sold for the full retail price, that is where they are behind the times. In the central vacuum world, MD and Cyclovac are the same way, you must go through a dealer to get their units, again, very behind the times. Of course, it is a manufacturer's right to sell their product in the way they choose, but these days, if you don't sell on the internet, you will lose sales.
Mike