what is the best vacume you can find at walmart??

I have two kids and a dog.I need a really good vacume.I want to go get one at walmart here in a min.I guess i could try sears,bed bath and beond or K-mart any suggestons???

I have a friend that owns a vacuum cleaner shop. He said Dyson is way over rated. They are costly to repair and need repairs often. He recommends a Sanitaire by Eureka. I’m not sure if WalMart carries them. But stay away from Dyson. They can’t stand up to continued use.