Sanitaire SC5745A Commercial Quiet Upright Bagless Vacuum Cleaner with Tools - 10 Amp Motor, 13" Cleaning Path - Ideal for Offices, Hotels, and Large Spaces

This is by far the best vacuum we had, you can literally see the dirt and dust in the canister and in the filter. It kept suctioning all the trapped dirt in the carpet when we vacuum every 3 days and thats the dirt that we inhale. All the other brand names doesn't even compare to what this vacuum can do. The motor is strong and hair doesn't get stuck to the brush so we don't have to worry about cleaning it to pick up dirt. We have 4 air filters already but since we live in LA and have carpet, there's just too much dirt and pollution and this vacuum does a phenomenal job!