I could get by with cold water, running out of chemicals, vac motor burning out or even my van breaking down. But I could not be without my powerbrush. When it did break down and i had to use a wand, it was bleeping hard work. What could be easier than wheeling a powerbrush up and down a carpet as opposed to using a wand where downward pressure makes it an exhausting tool to use. I dare say the boffins on here will try to shoot me down in flames. Try a wand for a while then try hiring a powerbrush for few days and see what you think.
Chris