The hands-down best upgrade is the electric vacuum kit - such as the Complete Stealth Kit
. The Ultra T210 or TP210 is the best non-electric vacuum available, but for homeowners with enough pet hair and carpet, it is not powerful enough. In contrast, the electric hose and vacuum head are so powerful that you will wonder how you ever got by without it. Pet hair, deep down dirt, and multiple times the air reaching your carpet makes a huge difference. Since you have Vacuflo you need to look at your hose end now. If it has two metal pins/stubs that plug into the wall vacuum inlet, you need to know that a new Stealth Kit with Cord will fit into your system but you will not be able to turn the suction on/off on the hose handle. You'd have to unplug it from the wall. You will be able to control the electric beater brush though. And if you want to control the suction you can if you spend about $20/inlet to add an adaptor and new faceplate (easy to do), and you can do that at a later time. See the Vacuflo Help page
for more information about upgrading.