Beware!
Justin:
Displaying your machines with their hoses connected to their power nozzles is a VERY bad idea. When hoses are not in use, they should be stored in such a way that they are not bent over a small curve. If you leave a hose connected to a power nozzle that is standing up, the hose gets bent over too small a curve. When hoses get bent that way for any length of time, they crack right where the bend is, close to the hose handle.
One of the best ways to store a hose is over two sturdy nails spaced about ten or twelve inches apart. Hang the hose over the nails, and let the ends hang down.
When I'm through vacuuming, I always remove the hose from the canister and power nozzle, and hang it, so that it will not crack. It's okay to leave the hose connected and the power nozzle standing for as long as it takes to take photos, but not for any length of time, trust me.