I need to purchase a vacuum cleaner for my new home and have no idea where to start. Please help!!!

I've borrowed the Dyson animal one, but I can't justify buying a $600 vacuum cleaner. I saw that Dirt devil had an animal one, but not sure how it rates. I have one dog, she's a shorter haired dog, but when she wants to shed, she sheds.

I know bizzar question, but this is the only place I can think to ask such a question.

I'm looking for a bag less one just because I like to run the vacuum cleaner a lot. (Yes I am "particular")

Thank you!