I've never had a vacuum (much less an air cleaner) like the Rainbow unit that we bought from City Dynamics. After winning a small Rainbow air cleaner, Gabriel from City Dynamics showed up (with a young trainee in tow) to present it and demo their large unit. The large unit functions as an air cleaner and vacuum. Gabriel demonstrated each attachment, all the while showing what the Rainbow was pulling in each time. Yikes, was I embarrassed. Then he used the vacuum I had on a small area about 30 times, and then went over the exact area maybe two back-and-forths with the Rainbow. Holy crap, that's when we decided we had to have one. We leave the base unit running almost all day in air cleaner mode, and our house smells clean (and we have three cats with a large litter box). As for the vacuum action, there is virtually no dust or cat hair floating in the light that streams in through the windows now. City Dynamics made it easy to purchase such a great unit - we're satisfied!
I bought a Rainbow cleaning system from City Dynamics and we LOVE it! No dust, allergies are better, and it's wonderful for getting rid of any fowl odors. I turn mine on to 'purify' when I cut onions or accidentally burn something in the kitchen. It's a sleek and easy to use machine, I love using my essential oils with it. My husband told me the other day that he's spoiled by how nice I keep the house smelling.I'm happy with every aspect of the purchase. Matthew McClure was professional and so personable. He answered my many questions and it was a quick and easy process. My machine is paid off now and it's my favorite home appliance! I recommend it to everyone I know and my friends and family are so jealous of it when they see it in action/after effect!!