If you want a vacuum that really sucks, check out a Riccar Tandem Air:
https://www.riccar.com/products/uprights/tandem-air-vacuums
It has two suction motors: one near the bag and one near the head. It's also engineered to be serviceable/repairable. Even the brushes on the head are designed to slide out for cleaning or replacement. It has an aluminum frame and commercial-grade motors. Yes, it's more expensive than a Dyson, but it also doesn't "wear out", you just repair it and keep going. When my mom's white beagle was in our black-carpeted minivan, it was the only thing that could suck out the dog hair.